Kratos, Stoic Father

Whenever you attack with one or more Gods and whenever a God dies, you get an experience counter. At the beginning of your end step, put a number of +1/+1 counters on target creature equal to the number of experience counters you have. Partner—Father & son (You can have two commanders if both have this ability.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oegd8a94ppb1hmgsbb95f.