Shadow Dragon

Hexproof Vigilance First Strike Indestructible Fading 7 (this creature enters the battlefield with 7 fade counters on it. at the beginning of your upkeep, remove a fade counter from it. when there are no more fade counters on shadow dragon, sacrafice it.) You can only play Shadow Dragon if a creature you control with power/toughness 4/3 or more died this turn.