Rock Hydra [International Collectors' Edition] Scars of Mirrodin Promos Whenever one or more Dragons

Whenever one or more Dragons you control attack

going 6—0—1

Set: Premium Deck Series: Slivers Type: Creature — Sliver Rarity: Uncommon Cost: {W}{U} All Slivers have shroud

"One score and four he reigned

Tap five untapped Myr you control: Search your library for a Myr creature card

Rock Hydra [International Collectors' Edition] Scars of Mirrodin Promos Whenever one or more DragonsSet: International Collectors' 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.