Quote from OptimisticKoala >>

Does anyone have any views on whether or not using True Strike would allow Fighters or Paladins to use extra attacks? Sadly I'm leaning towards NO because this is still initiated with a "Magic" action rather than an "Attack" action. It also specifies 'one' attack in the spell description. 

Points against it however is the that the "Attack" action itself is defined simply as making a melee attack roll, which this spell does. 

So maybe this spell does proc extra attacks, however extra attacks would have to revert to STR/DEX. Bit open to interpretation here. Either way, fairly easy rule to bend and cool spell overall.

 

No, this doesn't work with Extra Attack in general. Extra Attack applies to the Attack action; this spell, like every spell that's cast with an action, is cast with a Magic action. The Attack action is not defined "simply as making a melee attack roll", so that is not relevant.

An exception to this is the Eldritch Knight subclass for the Fighter. At level 7 they get a feature called "War Magic" which allows replacing one (and only one) attack from an Attack action with casting a Wizard cantrip that takes one action to cast, which this spell is. So, level 7+ Eldritch Knights can do what you're describing, but other characters can't.

Quote from Stupid69 >>

Attack says melee. Does this have to be a melee weapon ? 

 

No, this can be used with any weapon (melee or ranged) that you're proficient with and costs at least 1 CP. 

That last part is presumably to keep it from being used with "fake" weapons like Warlock pact weapons or Flame Blade or whatever.

Quote from Shath_Hound >>

assuming a cleric took magic initiate to get this spell, would it work with divine strike since it is an attack with a weapon? 

Yes, since Divine Strike says "when you hit a creature with an attack roll using a weapon" and True Strike says "you make one attack with the weapon".  

I would think so. Sneak attack uses the same damage as the weapon, which the spell makes radiant...

How does this interact with the Loading property of Pistols/Muskets?

Do you still need to reload?

(In response to Legendofdavid) I'm assuming changing to bonus action also means also allowing the attack roll to be on the same turn. This would make old TS overpowered, particularly for Arcane Tricksters, but would allow a spellcaster to always have advantage on (action) spells with an attack roll.

Reaction - what, if you miss, reroll? The more I think on it, the less I'm sure how I feel about it. Yes, your reaction is certainly less valuable than your action, but I can't tell if re-rolling one miss a turn outweighs blocking yourself from using other reaction spells. One one end of users, it's like having inspiration once a turn; but on the other, it bars you from using other reaction spells.

Not sure it's weaker than Booming Blade; if you're getting the willing movement damage then sure, but that's very rarely the case in my experience. This version of TS lets you change the damage type of the weapon from commonly resisted to uncommonly resisted, which would make up for the 1 more damage on average BB has. Not to mention your spellcasting modifier adding to the damage instead of Str/Dex which is hopefully higher - also evening or beating out the 1 damage BB appears to have over TS. Not to mention it's more likely to actually hit for the same reason.

I'm surprised the spellcasting ability feature is shrugged off, aren't the only other things in the game that let you do this Hexblade and Shillelagh? Maybe I'm just dreaming of Bladesinging with extra Dex going back into Int, but this is the only thing allowing for a pure Int gish (without weapon restriction/needing magic initiate to get Shillelagh to use Int)... until you get extra attack at 6th level and go mad from MAD.

If you want a gish that is melee and can throw out a couple spells, sure there's other options. But having a full Wizard's spell list and slots while your sustained option is a melee weapon is just peak.

Should this work with pact weapons? They don’t have “worth” since they are conjured items

“ * - (a weapon with which you have proficiency and that is worth 1+ CP)”

Sneak attack yes, nick no

Can i use agonizing blast on this cantrip to add my charisma twice?

Quote from deavenwatt >>

Should this work with pact weapons? They don’t have “worth” since they are conjured items

“ * - (a weapon with which you have proficiency and that is worth 1+ CP)”

No, it doesn't work with pact weapons. However, there would be very little reason to use it with a pact weapon, since pact weapons already have all of the benefits this provides.

I think War Domain should have gotten this cantrip or BB/GFB, they don't get Extra Attack and their flavor of "your god delivering you bolts of inspiration while you are engaged in battle" fits well with the new description of True Strike.

Quote from lordgromet >>

Quote from Shath_Hound >>

assuming a cleric took magic initiate to get this spell, would it work with divine strike since it is an attack with a weapon? 

 

Yes, since Divine Strike says "when you hit a creature with an attack roll using a weapon" and True Strike says "you make one attack with the weapon".  

 I think magic initiate cleric is where this cantrip shines. By my maths it outshines (radiant damage pun) a protector cleric swinging their martial weapon.

Level 1 - same damage, slightly better attack. Level 5 - better attack & damage. Level 7, 11, 14, 17, both attack & damage remain better.

Assumption 1 - Even a protector cleric prioritizes their Wisdom (primary casting stat) over their secondary / hitting stat. Wisdom starts 16, hitting stat starts at 14; wisdom raised at Level 4 & Level 8 before starting on hitting stat at Level 12. But even if the protector cleric maximizes their melee stat that just keeps attack even while damage still increases more for True Strike than your melee attacks do.

Assumption 2 (Level 7) True Strike ("make one attack with the weapon") triggers Divine Strike ("hit a creature with an attack roll using a weapon"). Both protector and true strike clerics maximise divine strike.

So would this spell then count as an attack and a person with Multi-attack would get their second attack? 

Material component is listed as "a weapon with which you have proficiency and that is worth 1+ CP."

Does that specifically exclude unarmed attacks?

*Withers voice*: What is the value of a single human hand?

RAW it does exclude unarmed attacks, but as a DM I would allow it. 

i never use it (Bard)

Quote from Osiris8870 >>

So would this spell then count as an attack and a person with Multi-attack would get their second attack? 

No, that's not how it works. Casting a spell (including this one) uses a Magic action; the Extra Attack feature only works with the Attack action.

The Eldritch Knight subclass for the Fighter class does offer a feature that lets you cast a cantrip in place of one of the attacks in an Attack action. But it's not something that's generally available to anyone with Extra Attack.

Why is this not available to Clerics?

Why radiant instead of force when the classes that can use this are pretty much all arcane casters. Aside from Warlock which is a erm... eldritch caster?

Quote from jjhughes32580 >>

Why is this not available to Clerics?

Probably because Clerics already have plenty of ways to deal radiant damage.