Kykkxyl, Herald of Nightmares

Indestructable, Hexproof, Flying
Kykkxyl, Herald of Nightmares cannot leave the battlefield, and cannot be blocked.
Whenever an opponent casts a spell, they lose
1 life for each color in it.
Whenever an opponent's creature dies,
it's controller discards a card.
Soon all shall be darkness... heh.. heh.. heh..