Rock Hydra [30th Anniversary Edition] 23 Set: Commander 2017 Type: Legendary

Set: Commander 2017 Type: Legendary Creature — Dragon Avatar Rarity: Rare Cost: {W}{U}{B}{R}{G} Flying

Set: Mystery Booster Type: Enchantment Rarity: Rare Cost: {3}{B}{B} Flash

Set: Fourth Edition (Foreign Black Border) Type: Artifact Creature — Construct Rarity: Rare Cost: {6} Triskelion enters the battlefield with three +1/+1 counters on it

Sacrifice this artifact: Add two mana of any one color

Rock Hydra [30th Anniversary Edition] 23 Set: Commander 2017 Type: LegendarySet: 30th Anniversary 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.