A spell roughly adapted from basilisk which drains magic from magic users

It takes 1 spell slot from your opponent and can be used to restore a spell slot of your own for every 1 you absorb

You can gain a temporary spell slot from using this, but if you do, when you gain it you'll take 20 damage and 10 more for every minute you keep it. (This applies to most species, exceptions are ones that need magic to operate some of their non-spell casting abilities).