Muzan Kibutsuji

Blood Demon Art - Biokenisis: Muzan has all card types, abilities and keywords of all other demons on the battlefield.
{x}: Muzan's power and toughness becomes X-1.
Pay 3 life: Regenerate Muzan.
{3}{u}: Transform Muzan. Activate only if an opponent has cast 2 or more spells or you have lost life this turn.

“I haven't got any punishments. I have been forgiven for killing hundreds of thousands of humans. I haven't seen
God or Buddha for a thousand years.” - Muzan.