Hunting Moa is a special Creature — Bird Beast card from Time Spiral Timeshifted (TSB), collector number 80. Current market price: $0.17 (foil $0.49), TCGplayer market prices via Scryfall.
Echo {2}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When this creature enters or dies, put a +1/+1 counter on target creature.