An ability that triggers "Whenever you proliferate" triggers even if you chose no permanents or players while doing so.
Thrummingbird
If a player or permanent has more than one kind of counter on it, and you choose for it to get additional counters, it must get one of each kind of counter it already has. You can't have it get just one kind of counter it already has and not the others.
To proliferate, you can choose any permanent that has a counter, including ones controlled by opponents. You can choose any player who has a counter, including opponents. You can't choose cards in any zone other than the battlefield, even if they have counters on them.
Last observed on Scryfall 2 months ago at $4.29. Over the trailing 90 days the price moved between $0.03 and $4.29 across 45 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 3 catalogued treatments from SOM — the lineup includes Foil and Nonfoil alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.
Card #47 of *Scars of Mirrodin*, the set that shipped alongside the October 2010 Scars of Mirrodin release.
Card type: Creature — Phyrexian Bird Horror, color identity blue, printed at uncommon. Uncommons fill the middle-tier slots in a standard booster configuration. Mana cost: {1}{U} (2 converted). Keyword abilities: Flying and Proliferate.
Legal across the major constructed formats — Modern, Legacy, Vintage, and Commander — plus Standard rotation play.
EDHrec ranks this card #833 in Commander, putting it in the common-include tier of the format's playable pool.
Illustrated by Efrem Palacios. Rarix catalogs 61 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Efrem Palacios
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.































