Maran, the Last Paradise

Your life total can't change. (Effects that cause
gain or loss of life are reduced to zero, and you can't
activate abilities that would require you to pay life.)
{1}: Maran, the Last Paradise becomes a 6/6
Giant creature with first strike and hexproof in addition to its other types until end of turn.
Whenever three or more creatures attack you and
aren't blocked, sacrifice Maran, the Last Paradise.