Gurranq, the Death Eater

Deathtouch, menace
Whenever another nontoken creature dies, put a death counter on Gurranq, the Death Eater.
At the beginning of your upkeep, if there are five or more death counters on Gurranq, you may remove all counters from him and exile him, then return him to the battlefield transformed under his owner's control.
"Feed me... more... death."