Rock Hydra [Alpha Edition] Ixalan Treasure Chest Actual model may vary from

Actual model may vary from images

The city is vast and perilous

put Cogwork Librarian into that booster pack

When you cast a creature spell

Rock Hydra [Alpha Edition] Ixalan Treasure Chest Actual model may vary fromSet: Alpha Edition Type: Creature Hydra Rarity: Rare Cost: {X}{R}{R} Rock Hydra enters the battlefield with X +1 +1 counters on it. For each 1 damage that would be dealt to Rock Hydra, if it has a +1 +1 counter on it, remove a +1 +1 counter from it and prevent that 1 damage. {R}: Prevent the next 1 damage that would be dealt to Rock Hydra this turn. {R}{R}{R}: Put a +1 +1 counter on Rock Hydra. Activate only during your upkeep.