Rock Hydra [Unlimited Edition] Mountain Forest all creatures that opponent controls

all creatures that opponent controls attack if able

(It's an artifact with "{T}

[-7]: Chandra

Set: Ixalan Prerelease Promos Type: Creature — Dinosaur Avatar Rarity: Mythic Cost: {5}{W}{W}{W} When Wakening Sun's Avatar enters the battlefield

Rock Hydra [Unlimited Edition] Mountain Forest all creatures that opponent controlsSet: Unlimited 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.