Pet Avengers

Reach Power-up — {6}{G}: Put a +1/+1 counter on this creature and create a 3/2 white Hero creature token with vigilance. (Activate each power-up ability only once. Reduce the cost by its mana cost if it entered this turn.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o3ytc1p41pb1h6g0p0g60.