Core of Imuru

target creature gets flying, triplestike, lifelink, menace, deathtouch, hexproof, vigilance, trample, invincible for one turn
and a +6/+6 counter. When this creature dies, sacrifice a floating island land and put target card back in your hand, but leave this card in your graveyard. To attack with target creature, however, tap 3 floating island manna.