This is a very unusual ability in that its a special action, the same as unmorphing a creature or paying the cost to put a companion into your hand
Vengeful AncestorVengeful Ancestor (3,642 Inclusions, 2% of 238,429 Decks) Unlike all the ancient Spirit Dragons we've seen thus far, Vengeful AncestorVengeful Ancestor was printed relatively recently, in the Forgotten Realms Commander precons
cards as resources Instead of lands or energy, you attach DON
Let's take a look at a couple examples
MAGIC MEETS THE LORD OF THE RINGSExperience the beloved story of The Lord of the Rings with the strategic gameplay of Magic: The Gathering, facing off against opponents in thrilling magical battles EPIC MULTIPLAYER BATTLESCommander is a multiplayer way to play Magic, an epic, free-for-all battle full of strategic plays and social intrigue THE HOSTS OF MORDORJoin the hosts of Mordor with a 100-card Blue-Black-Red deck containing 2 Foil Legendary Creature cards and 98 nonfoil cards INTRODUCES 20 COMMANDER CARDSThis deck introduces 20 never-before-seen Commander cards to Magic: The Gathering COLLECT SPECIAL TREATMENT CARDSEach deck comes with a 2-card Collector Booster Sample Pack containing 2 special treatment cards from The Lord of the Rings: Tales of Middle-earth set, including 1 Rare or Mythic Rare and at least 1 Traditional Foil Riders of Rohan Decklist Commander (1) Creatures (31) Aragorn, King of Gondor Beregond of the Guard Bastion Protector Dearly Departed Frontline Medic Selfless Squire Verge Rangers Weathered Wayfarer Combat Celebrant Flamerush Rider Frontier Warmonger Harsh Mentor Zealous Conscripts Fiend Hunter Palace Jailer Village Bell-Ringer Humble Defector Champions of Minas Tirith Gilraen, Dnedain Protector Grey Host Reinforcements Lossarnach Captain Archivist of Gondor Denethor, Stone Seer Gimli of the Glittering Caves Boromir, Gondor's Hope omer, King of Rohan Faramir, Steward of Gondor Riders of Rohan Erkenbrand, Lord of Westfold Prince Imrahil the Fair Thoden, King of Rohan Instants (4) Unbreakable Formation Path to Exile Swords to Plowshares Lost to Legend Sorceries (8) Increasing Devotion Visions of Glory Earthquake Supreme Verdict Sunset Revelry Call for Aid Forth Eorlingas
