Rock Hydra [Unlimited Edition] Pro Tour Promos Your opponents can't block with

Your opponents can't block with creatures with even mana values

Set: Alpha Edition Type: Artifact Rarity: Rare Cost: {4} All Swamps are 1/1 black creatures that are still lands

Set: McDonald's Promos: 2015 Collection Type: Fairy Rarity: Promo Retreat cost: Colorless

Set: EX: Holon Phantoms Type: Lightning Rarity: Common Retreat cost: Colorless

Rock Hydra [Unlimited Edition] Pro Tour Promos Your opponents can't block withSet: 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.