Creature — Jellyfish Hydra Beast
When you cast this spell, you gain half X life and draw half X cards. Round down each time.
Hydroid Krasis enters the battlefield with X +1/+1 counters on it.
Havoc is a small price to pay for data.
Ravnica Allegiance Promos (PRNA)
#183s, Mythic Rare
Illustrated by: Jason Felix