Moon Lord

If at full health, Moon Lord can only take up to
10 damage, and cannot be destroyed.
{3}, {t}: Create an Elder Being creature token named "True Eye of Cthulhu" with 8/9, and "{3}, {t}: Deal 3 damage to up to 3 target creatures.".
{5}, {t}: Deal 10 damage to up to 5 target creatures. Cannot be reactivated for 3 turns.
"The Moon Lord has awoken!"