Description: A magic scroll that can store a spell of the owner’s choice (or can be changed once per king rest) that buffs the spell stored but debuffs all the similar ones that the owner casts (not counting those casted using items).
Functionality: Once per long rest the player chooses a spell to store in the scroll or decide if they’ll change the already stored spell or keep it. The spell stored gains a +(3+X) dices that the player can split into:
Damage roll
To hit roll
Other rolls
The X stands for the types of damage that the spell deals/protect/affects in any way. The addition of the 3+X dices can be done only after having rolled that, example:
Matt rolls to hit (4) so spends one of the (3+1) dices but fail again. Nothing happens anymore.
Liz rolls to hit (22) but still fails so she spends two of her (3+2) dices going up to 36, that hits. She then rolls for damage, doing a total of 25 fire damage and 15 necrotic damage. But since she has still 3 dices and REALLY wants the monster dead, she uses her 3 dices again, more on the fire damage because those are d8 while the necrotic uses d12, rolling 8 and 5 on the additional fire damage and 11 on the necrotic damage killing the beast.
In the next turn (or encounter) the player who has the scroll still has the maximum (3+X) dices, until the spell slots run out, the scroll will work.
BUT
If the stored spell deals fire damage, all the other fire damage-dealing spells (not magic items) will receive disadvantage in the damage rolls
This happens to all the types of damage that the stored spell deals.
That means that Matt’s psychic spell, even if it didn’t landed, and Liz fire/necrotic spell are the only ones that deal a noticeable amount of those types of damage.
If the spell doesn’t deal any damage nor affects any type of damage in particular the spell will be rejected by the scroll.
If the spell heals, it can be used. Use +(1+Z) where Z is the number of targets (you count too, even if it’s only a self spell, so the minimum is +2). But gives disadvantage to all the other healing spells.
Inspiration: the meme above (this is an old draft, I didn’t know yet that links were easier and I’ve already wrote too much to change it) thanks @catchymemes ❤️