Stalwart Aven is a common Creature — Bird Soldier card from Iconic Masters (IMA), collector number 32. Current market price: $0.04 (foil $0.08), 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.)