Rock Hydra [Alpha Edition] Commander 2014 The Arbiter is a conduit

The Arbiter is a conduit of justice

Set: Arabian Nights Type: Creature — Plant Rarity: Rare Cost: {3}{G} {T}: Target attacking creature has base power 0 until end of turn

Knight-Cathar

Set: HarperPrism Book Promos Type: Artifact Rarity: Rare Cost: {0} At the beginning of your upkeep

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

Rock Hydra [Alpha Edition] Commander 2014 The Arbiter is a conduitSet: 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.