The Ur-Dragon (Foil Etched) [Commander Masters] XY177 Hall of Storm Giants enters

Hall of Storm Giants enters the battlefield tapped

nature exploited his war machines to renew itself

Set: EX: Unseen Forces Type: Fighting Rarity: Holo Rare Retreat cost: Colorless

but how could that be

Set: Summer Magic / Edgar Type: Sorcery Rarity: Common Cost: {U} Return target artifact card from your graveyard to your hand

The Ur-Dragon (Foil Etched) [Commander Masters] XY177 Hall of Storm Giants entersSet: Commander Masters Type: Legendary Creature Dragon Avatar Rarity: Mythic Cost: {4}{W}{U}{B}{R}{G} Eminence As long as The Ur Dragon is in the command zone or on the battlefield, other Dragon spells you cast cost {1} less to cast. Flying Whenever one or more Dragons you control attack, draw that many cards, then you may put a permanent card from your hand onto the battlefield.