Rock Hydra [Alpha Edition] Commander 2014 Set: Alpha Edition Type: Instant

Set: Alpha Edition Type: Instant Rarity: Common Cost: {X}{W} Prevent the next X damage that would be dealt to any target this turn

Knight-Cathar

Set: Arabian Nights Type: Creature — Human Rarity: Uncommon Cost: {U} Merchant Ship can't attack unless defending player controls an Island

or the creature's toughness

Shield of Emeria enters the battlefield

Rock Hydra [Alpha Edition] Commander 2014 Set: Alpha Edition Type: InstantSet: 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.