Hydroid Krasis
Creature — Jellyfish Hydra Beast
When you cast this spell, you gain half X life and draw half X cards. Round down each time.
Flying, trample
Hydroid Krasis enters the battlefield with X +1/+1 counters on it.
Havoc is a small price to pay for data.
0/0
Illustrated by
Ravnica: Clue Edition#195MythicEnglishLegality
Rulings
Jan 25, 2019
Hydroid Krasis’s first ability triggers as you cast it, and that ability resolves before the spell itself. It resolves even if Hydroid Krasis is countered.