RePain
Functionality: Reproduce the last damage that the creature has suffered, it doesn’t function if the last hit failed, didn’t deal damage or was another RePain.
If the last attack required a save throw the creature targeted automatically fails (because it rolls the same number of the last time)
If the last attack was boosted by rage, or other mechanics player-based, the boost still applies. If the boost was due to some magic items that the RePain caster doesn’t have or isn’t affected by, the boost doesn’t applies, but the owner of the item can use a bonus action to throw the item (with advantage) to the RePain caster (the throw can happen on the attacker turn, taking their bonus action, or on the caster’s turn, taking their bonus action even if it’s the attacker who throws the item)
The spell fails if the last attack was 1 hour before the casting of RePain or if the player casting it wasn’t in a 50ft radius of the damage being dealed.
If the amount of damage dealt in the attack was reduced by any item/spell/etc that the enemy used the RePain spell will deal the normal amount of damage.
The RePain spell can’t be redirectionated towards the caster nor the original attacker.
The RePain spell doesn’t heal the player casting it if the original attack counted a heal on the attacker, but it does heal the original attacker by the same amount.
The RePain can be used as a cantrip or as a level 1 spell, when used as a cantrip it cant reproduce the same attack (ex: sword attack by player A, dagger by player B, fireball by player C, Eldritch Blast by player C, etc etc) twice (the OG attacker can be the same tho). When used as a level 1 spell it can, so an Eldritch Blast spammer can be “helped” by a RePain lvl1 spammer.
The RePain spell doesn’t replicate non-damaging spells (Minor Illusion, Charm Person).
If the bonus effect (blind, charmed, paralysed) of the last damage-dealing attack is already gone, the RePain spell reactivates it (if charmed or similar, the target is charmed by the RePain caster)
The RePain takes effect even if the original attacker is dead/unconscious/etc, possibly healing them if the original attack healed them even by just 1 HP.
Inspiration: my mind just birthed it while I was smoking. My brain is a cool dude