Icon Of Tzeentch

Chaos Creatures you control gain Prowess
{u/r}{u/r}{u/r},{t}: You may cast a noncreature spell
in your graveyard without paying it's mana
cost as long as it was cast on the turn this
ability was activated
If Icon Of Tzeentch is on the field and either
Icon Of Khorne, Icon of Slaanesh, or
Icon Of Nurgle enter the battlefield
sacrifice Icon Of Tzeentch.