Four d6 of radiant damage at first level, from 120 feet away, and it hands your rogue a Sneak Attack for free. Come fight me about whether that’s balanced.
Today we’re looking at a 1st level evocation spell called Guiding Bolt. It sits on the Cleric list and only the Cleric list, which surprises people, though a pile of subclasses hand it out anyway and we’ll get to those. You throw a bolt of light, you make a ranged spell attack, and on a hit the target eats 4d6 radiant and lights up so the next attack against it lands with advantage.
One action to cast, a range of 120 feet, verbal and somatic components with nothing material, and a duration of exactly one round. No concentration, which means you can throw it while Bless or Spirit Guardians is still humming along behind you.
The internet has two camps on this spell and they’ve been shouting past each other since 2014. One says 4d6 at first level is absurd for a class that also heals, buffs, and wears plate. The other says the thing misses constantly and Magic Missile quietly beats it on average damage. Both camps have real math, and we’re going to do that math.
For now, the rules as written. And you can always fight me in the comments if you read it differently. That’s what makes this fun.
RAW
- Casting Time: 1 action
- Range: 120 feet
- Components: V, S
- Duration: 1 round
Here’s the 2014 text, straight from the Player’s Handbook, page 248:
“A flash of light streaks toward a creature of your choice within range. Make a ranged spell attack against the target. On a hit, the target takes 4d6 radiant damage, and the next attack roll made against this target before the end of your next turn has advantage, thanks to the mystical dim light glittering on the target until then.”
Let’s slow down, because five different sentences in there start table arguments.
“Make a ranged spell attack against the target.” So it can miss, and a miss gives you nothing. No half damage on a save, no lingering effect. The slot is gone and your turn is over. That’s the balance lever people leave out when they call this spell overpowered, and it cuts the other way too, because a spell attack can crit. Roll a natural 20 and you’re throwing 8d6, an average of 28, out of a first-level slot, at something forty yards away. It’s also a ranged attack, so a hostile creature within 5 feet of you gives you disadvantage. Front-line clerics learn that the hard way.
“The target takes 4d6 radiant damage.” Average of 14, and you don’t add your Wisdom modifier. Fourteen is a lot for a first-level slot, and a player wrote to Mike Mearls two months after the book shipped because he assumed it was a misprint. Mearls answered “4d6 is correct,” with the reasoning that it’s “14 damage for a spell, vs 7 to 10 damage per attack for a melee character.” The designers looked at it and said yes, on purpose.
Radiant is also about the best damage type you can be throwing. Almost nothing resists it outside celestials and a few high-end fiends, and a stack of undead take double. Picture a shadow out of the 2014 Monster Manual. Armor class 12, 16 hit points, resistant to your fighter’s mundane sword, vulnerable to radiant. Your cleric with a plus 5 to hit needs a 7, rolls a 13, connects, rolls an average 14, and vulnerability doubles it to 28 against a 16 hit point monster. Smear. Meanwhile the fighter has been sawing at it for half damage for two rounds.
“The next attack roll made against this target.” Three pieces and all three get misread. “The next” means one attack roll and one only. “Attack roll” means it burns when somebody rolls, whether that attack hits or misses, so your barbarian swinging wild and whiffing still spends it. And “against this target” says nothing about who’s doing the attacking, so it goes to whoever swings next in the initiative order. Your paladin, your ranger’s wolf, your summoned spirits, and yes, technically a creature that hates you, if it happens to attack the same target in the window.
“Before the end of your next turn.” That window is generous enough to include your own follow-up. If nobody attacks that creature before your next turn comes around, you walk in and take the advantage yourself. Which is where the Guiding Bolt into Guiding Bolt joke comes from, and we’ll get there in the uses post.
“Thanks to the mystical dim light glittering on the target until then.” Hold onto that clause. The 2024 book deleted it, and deleting it settled two long-running arguments.
At Higher Levels
“When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.”
A 2nd level slot is 5d6, an average of 17.5. A 3rd level slot is 6d6, or 21. A 5th level slot is 8d6 for an average of 28, with a crit ceiling of 96. The rider never improves. You get one extra advantage no matter how big the slot, so upcasting is a pure damage decision. At my table the call is easy. If the bigger dice will finish the creature, upcast. If you’re tickling a boss with 200 hit points, cast it at first level and spend the good slot on something that changes the fight.
Limits and Cheeses
Three quick ones.
It can miss, and that’s the whole balancing act. At a 65 percent hit rate you’re averaging about 9 damage per cast over a campaign, which lines up neatly with Magic Missile’s guaranteed 10.5. That comparison is the spine of the entire Reddit argument, and it’s in the uses post.
Advantage doesn’t stack, and it cancels with disadvantage. Hit an invisible creature and the next attacker rolls flat, because not seeing the target eats the advantage from the spell. One advantage plus one disadvantage equals a normal roll, no matter how many sources you pile on.
And the advantage is one roll. Somebody at your table will assume the target stays lit up for the whole round. First roll takes it, then the glimmer is done.
The Twinned Spell trick, the Stars Druid free bolts, the War Cleric plus 10, the enspelled weapon rogue nonsense, and a few things the designers absolutely did not intend all live in the companion post. Go read the Guiding Bolt uses post for that.
The 2014 version versus the 2024 version
Short answer, they left it almost completely alone.
Guiding Bolt is on page 282 of the 2024 Player’s Handbook. Same 1st level evocation, same one action, same 120 feet, same verbal and somatic, same one round, still no concentration, still 4d6 radiant, still plus 1d6 per slot level above 1st, and the rider is still advantage on the next attack roll before the end of your next turn. Here’s the 2024 wording: “You hurl a bolt of light toward a creature within range. Make a ranged spell attack against the target. On a hit, it takes 4d6 Radiant damage, and the next attack roll made against it before the end of your next turn has Advantage.”
Read those two back to back and one thing is missing. The mystical dim light is gone. In 2014 the advantage was justified in the fiction by a glow that stuck to the target. In 2024 the rider is bare mechanics with no light attached.
That deletion quietly killed two arguments that used to eat table time. First, whether the glimmer outlines an invisible creature and cancels its concealment. Faerie Fire says out loud that an affected creature can’t benefit from being invisible. Guiding Bolt never said that, but the dim light gave people something to argue with. Second, whether Darkness wipes the glow. Darkness dispels light created by a spell of 2nd level or lower, in both editions, and in 2014 you could make a straight-faced case that a first-level bolt’s dim light qualifies and the advantage goes with it. In 2024 the spell creates no light, so Darkness has nothing to grab.
The rest is copy editing. “A flash of light streaks toward” became “You hurl a bolt of light toward.” “A creature of your choice within range” became “a creature within range.” Same spell, tighter sentence.
What changed in 2024 is who gets to cast it. War Domain clerics now have it always prepared from level 3, alongside Magic Weapon, Shield of Faith, and Spiritual Weapon, on page 77. Circle of the Stars druids still get free casts off the Star Map, but the count moved from your proficiency bonus to your Wisdom modifier and the feature moved to level 3. Oath of Glory paladins and Celestial warlocks kept theirs. And the 2024 Magic Initiate feat matters more here than people notice, because it lets you cast your chosen first-level spell using your own spell slots instead of once per long rest. Take Magic Initiate (Cleric), pick Guiding Bolt, and any class in the book is throwing 4d6 radiant.
The loss column has one name in it. Divine Soul sorcerer was the spell’s most notorious home in 2014 because it borrowed the whole cleric list, and Divine Soul doesn’t exist in the 2024 Player’s Handbook. There’s a second, quieter loss stacked on top of it. The 2024 rewrite of Twinned Spell locks Guiding Bolt out entirely, and I’ll walk through exactly why in the uses post.
History
Now the part where I have to be honest with you, because somebody is about to tell me about the 1978 version.
There isn’t one. Guiding Bolt is a fifth edition original. It doesn’t appear in original D&D, in AD&D first or second edition, in 3.0 or 3.5, or in fourth edition. The name shows up for the first time in the 2014 Player’s Handbook.
What I can give you is the family it married into. Third edition’s cleric had Searing Light, a 3rd level evocation, standard action, medium range, ranged touch attack, dealing 1d8 per two caster levels up to a cap of 5d8, with a nastier progression against undead. Same idea, holy light punched through a monster, except it cost a third-level slot and did nothing for your friends.
Fourth edition is where the resemblance gets uncomfortable. The 4e cleric had an at-will power in the 2008 Player’s Handbook called Lance of Faith. Standard action, ranged 5, Wisdom against Reflex, 1d8 plus your Wisdom modifier in radiant damage, and one ally you can see gains a plus 2 power bonus to their next attack roll against that target. Radiant poke plus a handoff to a teammate against the same creature. That’s Guiding Bolt’s design in miniature, six years earlier. I’ve found no designer statement connecting the two, so I’m calling it a family resemblance and not a bloodline. If you have a source that says otherwise, put it in the comments and I’ll read it.
So the real history of Guiding Bolt is its access list. 2014, cleric only, page 248, and straight into the SRD and Basic Rules, which is why it turns up in third-party products and starter boxes, including the Rick and Morty set on page 54. 2017, Xanathar’s put it on the Celestial warlock’s expanded list and handed the whole cleric list to Divine Soul sorcerers, which is when the Twinned Spell discourse started. 2020, Tasha’s gave it to Oath of Glory paladins and made it a free repeatable cast for Circle of Stars druids. 2024, the War Domain joined and Divine Soul left. Eleven years of edition churn and the spell text lost one flavor clause. Most first-level spells got rewritten, renumbered, or nerfed somewhere in there. This one got a haircut.
Opinion
Guiding Bolt is the best-designed damage spell at first level, and the damage is the bait.
The 4d6 is what gets new clerics to take it, and it’s excellent through the first few tiers, and somewhere around level 7 it slides into “a bit better than a cantrip” territory. The part that never falls off is the second sentence. You’re buying a Help action that works at 120 feet, doesn’t require standing next to the monster, and comes with fourteen damage attached. When your rogue needs advantage and nobody’s adjacent to the target, when your paladin is holding a smite and can’t afford the whiff, when your archer took Sharpshooter and is eating a minus 5, that rider is the play. Advantage also moves your party’s crit chance from 5 percent to 9.75 percent on that swing, and a doubled smite is a real number.
I can already hear the comments. “It always misses, John.” Yes, about a third of the time, and that miss feels awful at level 2 when you had two slots all day. That’s the price of the ceiling. A spell that reliably did 14 damage at range for a first-level slot with free advantage attached would be a genuine problem, so the designers made you roll for it. Fair trade.
Where I’ll push back is on the people who drop it from the prepared list after level 5. The damage stops mattering and the advantage doesn’t, and spending a first-level slot to set up somebody else’s big turn is one of the cheapest tempo plays a cleric has.
So tell me where you land. Is Guiding Bolt overtuned for a first-level slot, or is it a coin flip dressed up as a nuke? And be honest about how many times you’ve missed with it and pretended you hadn’t. Let me know in the comments below, go read the companion post for the Twinned Spell trick, the Stars Druid nonsense, and a few ways to abuse this thing that your DM will not enjoy, and until next time, roll high and stay ridiculous.
