Sephiroth, Planet's Heir

Vigilance (Attacking doesn't cause this creature to tap.) When Sephiroth enters, creatures your opponents control get -2/-2 until end of turn. Whenever a creature an opponent controls dies, put a +1/+1 counter on Sephiroth.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o84dv53xppb1hm479qvxk.