True Strike

If this cantrip applies to any weapon with which you have proficiency, why does it say "melee" under attack/save?  Is it limited to melee attacks or not?  My DM insists that it is melee only because this page includes that word, despite the fact that it isn't there in the PHB.

it is not. your dm is wrong.

any weapon is viable.

Can I use this Cantrip on My Warlocks 'Pact of the blade' weapon and then still take the extra Attacks from 'Thirsting blade' and 'devouring blade'. In the same turn?

Quote from wagnarokkr >>

Quote from TheFizzleKizzler >>

Can I use this Cantrip on My Warlocks 'Pact of the blade' weapon and then still take the extra Attacks from 'Thirsting blade' and 'devouring blade'. In the same turn?

No. Casting a spell (this one, or any other spell with a casting time of 1 action) uses the Magic action. Thirsting Blade explicitly only applies when you take the Attack action.

The extra damage that this and other combat cantrips gain at certain levels is intended to balance out this sort of thing.

 I thought so. I am very new to dnd. I Had people tell me that Paladin/Warlock builds get strong very quickly, however I did see a lot of debate about it online and some people were using strong arguments for it synergysing. Warlocks allready seem strong by themselves but giving yourself an armour class of 19-21 at level one gets rid of their one weakness. Add proficiency in martial weapons and two weapon masteries.
I'm dming but I can't wait to play someone elses campaign as a player.
I love min/maxing so I've been creating character builds which I've noticed has been helping me learn the rules in more depth.

Dont get me wrong though. I've got ideas for builds that are not that optimal and are more fun. A hippy druid that subclasses into warlock because when he was tripping a Fiend appeared and tricked him into a pact that he doesn't realize is actually real. When he does pact magic instead of druidic magic, he doesnt really understand what is going on or how he was able to do it.
He can often be found during downtime licking trees because Prestidigitation lets a character flavour 1 cubic foot of non living material for for an hour. And before anyone comes in and tells me tree's are living, The part of the tree under the bark is not in fact living. It is made from old dead bark which tree's evolved as a mechanism for being able to grow so tall as to be above the rest of the plants without having an insane energy upkeep cost. (Look it up, it is real science).

Thanks for the clarification though.

exactly..... the player that likes it though say but it gives advantage.......

Nick won't work, because casting the spell isn't using your Attack action. But the spell does let you use your weapon as part of the attack, so things like Sneak Attack will work just fine if the weapon qualifies.

No, the one attack is part of the spell that you cast using a Magic Action.

This means you can't use extra attack or two weapon-fighting because you can only use those if you used the Attack Action.

1. Be an Oath of Redemption paladin

2. Take the Magic Initiate origin feat to get True Strike, take Great Weapon Fighting as your fighting style, and take the War Mage feat

3. Acquire a 2d6 damage Vicious Weapon (such as a maul or greatsword) and slap a Ruby of the War Mage on it

4. Use Hold Person (or Hold Monster if necessary) on your target, then smack them with your maul and use Banishing Smite, instantly and unavoidably doing a total of 14d6+2d8+10d10+5 damage for an average of 118 damage without even taking into account the benefit of Great Weapon Fighting. Congratulations, you have achieved the smitiest smite there ever was! And here's the best part: depending on which version of Hold Person/Monster you had to use and whether your opponent breaks free or not, you can do it next turn too

Is there anything stopping me from using this with a crossbow? or a firearm?

This spell is not well program in Beyond Sheet, the spell should never add the spellcasting modifier to the damage cuz it is already calculate in the weapon damage.
For a character level 5 :
Attack roll (D20 + spellcasting modifier) 
Damage roll 1d6 (quarterstaff) + Spellcasting modifier (Bludgeonning or Radiant damage) + 1d6 (radiant damage).

The True Strike spell show : 1d6 + spellcasting modifier (this is wrong cuz the spell damage dont have the spellcasting modifier it's bound to the weapon attack).
It needs to be fix.

Actually that's wrong. Read the wording: "you make one attack with the weapon used in the spell’s casting". Specifically, "used in the spell's casting". In other words, you are making an attack using the spell, not making an attack separate from the spell. It's the same as Booming and Green-Flame Blade, they are spells that include weapon attacks in the casting.

Since Radiant Soul requires, as you say, "that it be a 'spell you cast [that] deals Radiant...damage' and requires that damage to be inflicted against 'against one of the spell’s targets'", and True Strike is a spell that can deal Radiant Damage, it holds that when dealing Radiant damage using True Strike, the Celestial Warlock's Radiant Soul class feature would be applied.

It also makes no sense why Agonizing Blast would NOT apply with True Strike because, again, the cantrip is dealing the damage through the spell. Even though you word it as "your weapon attack is dealing *extra* damage", it's still THROUGH the cantrip (and the base cantrip doesn't deal "extra" damage at all, it's base weapon damage, you just choose Radiant or the weapon's normal damage type, but either way it's magical since it's through a spell).
Agonizing Blast states, "You can apply your Charisma modifier to any damage-dealing Warlock cantrip", True Strike is a damage-dealing cantrip. No reason why it doesn't apply and any DM that says it doesn't is an idiot.

I'm surprised no one pointed this out in almost a year.

Because it's not correct.

A big Glow up from  the legacy rule set. You can get advantage in so many normal different ways that it was never a good cantrip. Using your spell casting stats and  possibly changing to radiant damage have a lot more in game advantages.  Useful for Bladesingers and  Bards for sure.

So, basically Shillelagh now? Can it be used on any weapon, even a bow? 

So high Charisma Swords Bard, true strike intro level 2 fighter with archery and you have a charisma buffed multi-shot ranged fighter with radiant damage?

another spell Alchemist really need~

Does this spell use proficiency bonus on attack?

This is so much better now. It's kinda like Booming Blade and Green-Flame Blade, but trades raw damage and special effects for the ability to use your spellcasting ability instead of strength or dex.

And like those two, it should go incredibly well with Shadow Blade, as long as your DM isn't so strict that they say that you can't use that combo due to the 1 copper piece value requirement. (Personally, I think a second level spell is worth more than 1 copper piece and even more than 1 silver piece)

Quote from N421rr >>

Does this spell use proficiency bonus on attack?

 Yes, as you must be proficient with the weapon you are using.