Grenganor, Titan of Kaladesh

Devour Artifact 2 (sacrifice any number of
artifacts as this creature enters the battlefield,
it enters with twice that many +1/+1 counters)
Remove X counter from Greganor: Destroy
target Artifact with converted mana cost X or
less
Whenever an artifact is put into a graveyard from
the battlefield, you may pay {1} , if you do, draw a
card