Rock Hydra [Unlimited Edition] Human Ally put a charge counter on

put a charge counter on Door of Destinies

−4: Put target creature or planeswalker card from a graveyard onto the battlefield under your control

I simply reveal

His foul blood seeps out

000 Type: Artifact Creature — Insect Rarity: Rare Cost: {4} Flying

Rock Hydra [Unlimited Edition] Human Ally put a charge counter onSet: 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.