Stalwart Aven is a common Creature — Bird Soldier card from The List (PLST), collector number IMA-32. Current market price: $0.40, TCGplayer market prices via Scryfall.
Flying (This creature can't be blocked except by creatures with flying or reach.) Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)