Mega Satan

When Mega Satan enters the battlefield, create two 3/3 black Satan's Hand creature tokens with "Creatures you control named Mega Satan have -3/-3 and are hexproof and indestructible."
{1}{b}, {t}: Regenerate target Satan's Hand creature.
{2}{b}{b}, {t}: Put a Boss card from your hand onto the battlefield. Then, exile Mega Satan. Return it to the battlefield at the beggining of the end step of the next turn.