Undead Asylum

{t} Add {c} mana to your mana pool.
{2} Create a 3/3 asylum demon token.
Target creature fights with it. If Asylum Demon
wins. Exile the targeted creature
until Undead Aylum leaves the battlefield.
When your upkeep begins put a Rot counter
on Undead Asylum. When Undead Asylum
gets 3 Rot counters. Sacrifice it it.