Drada's Resist Elements

This ward captures a portion of an incoming magical attack, shielding you from the brunt of the blow and storing it for your next strike. You have resistance to the triggering damage type until the start of your next turn. Also, the first time you hit with an attack roll on your next turn, the target takes an extra 2d8 damage of the triggering type, after which (the attack or your turn, whichever happens first,) the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the extra damage increases by 1d8 for each slot level above 3rd.