Buff enemies based on a variable

[iderplikeapro 0]

All i need is a script or method to set all enemy hp/atk/def/other based on a variable. Ideally, they would use seperate variables. Like, you can talk to an npc, he asks if you want to supercharge the next boss or something, and you can say yes and variable 80 is set to 150%, 81 is 125% 82 is 120%, and 83 is 200% and that changes all enemy stats by that amount. Or just ask for a number input and let the player decide the numbers.

Thanks!