Anim Pakal, Thousandth Moon is a rare Legendary Creature — Human Soldier card from The Lost Caverns of Ixalan (LCI), collector number 300. Current market price: $4.40 (foil $5.62), TCGplayer market prices via Scryfall.
Whenever you attack with one or more non-Gnome creatures, put a +1/+1 counter on Anim Pakal, then create X 1/1 colorless Gnome artifact creature tokens that are tapped and attacking, where X is the number of +1/+1 counters on Anim Pakal.