Bill Cipher, Chaos Demon

Whenever a creature enters under an opponent's control, put a weird counter on Bill Cipher.

{3}, Remove three weird counters from Bill: Choose one.
-Search your library and/or graveyard for a card named Weirdmageddon and put it into your hand. If you searched your library, shuffle.
-Create a Possessed role token and attach it to target creature. (It's an Aura with "When this Aura enters, put 4 possession counters on enchanted creature. At the beginning of your upkeep, remove one. When th