Temporal Aperture [Urza's Saga] Vampire Shaman The dead serve as their

The dead serve as their own tombstones

for as long as that card remains on top of your library

" —Cao Cao

Gaea was willing to instill a portion of her own powers into some of her more vengeful followers

Mines became common as cities during the days of the artificers

Temporal Aperture [Urza's Saga] Vampire Shaman The dead serve as theirSet: Urza's Saga Type: Artifact Rarity: Rare Cost: {2} {5}, {T}: Shuffle your library, then reveal the top card. Until end of turn, for as long as that card remains on top of your library, play with the top card of your library revealed and you may play that card without paying its mana cost. (If it has X in its mana cost, X is 0.)