Hydroid Krasis is a rare Creature — Jellyfish Hydra Beast card from Secret Lair Drop (SLD), collector number 1332. Current market price: — (foil $8.00), TCGplayer market prices via Scryfall.
When you cast this spell, you gain half X life and draw half X cards. Round down each time. Flying, trample This creature enters with X +1/+1 counters on it.