Nerina, Water Tamer

+1: When you cast your first spell this turn, if you cast it from your hand and it's a blue instant or sorcery, it gains rebound.
-1: Create a 2/2 blue Elemental creature token with flying and "This creature gets +3/+3 during extra turns."
-5: You get an emblem with "At the beginning of an opponent's end step, you may discard five cards. If you do, take an extra turn after this one."