Pillowphant, Death's Warning

Double Strike, Flying, Trample, Vigilence, Protection from Black and Colorless.
When Pillowphant, Death's Warning, enters the battlefield, the Ring tempts you.
Whenever Pillowphant deals combat damage to the player, that player sacrifices 3 creatures.
Whenever you use an activated ability of an artifact, put a +1/+1 counter on each creature you control, and a loyalty counter on each plainswalker you control.