Malevolent Augur

Flying, trample
Whenever one or more cards you own enter exile
from the top of your library, put a +1/+1
counter on Malevolent Augur.
When Malevolent Augur leaves the battlefield,
return up to X target cards you own in exile to
the top of your library in any order, where X is
the number of +1/+1 counters that were on Malevolent Augur as it left the battlefield.