Colossus Hammer can be attached to a creature that didn't have flying to begin with. It just won't lose flying.
Colossus Hammer
If an ability of the equipped creature states that it has flying "as long as" a particular condition is true, that condition becoming true will not cause that creature to gain flying. For example, if the equipped creature "has flying as long as it's attacking," it will not gain flying, even if it attacks after Colossus Hammer becomes attached to it.
If the equipped creature gains flying after Colossus Hammer became attached to it, it will keep flying.
Last observed at $7.59, up from $7.36 thirty days ago. Over the trailing 90 days the price moved between $0.03 and $8.12 across 31 observations. Headline volatility reads moderate. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
Last observed on Scryfall 18 hours ago at $7.59.
This printing is one of 3 catalogued treatments from M20 — 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.
This card belongs to *Core Set 2020* (released July 2019).
Card #223 in Core Set 2020.
Rarity tier: uncommon. Uncommons fill the middle-tier slots in a standard booster configuration.
Card type: Artifact — Equipment. Mana cost: {1} (1 converted). Keyword abilities: Equip.
Legal in Pioneer, Modern, Legacy, Vintage, Commander, Brawl, and Historic.
EDHrec ranks this card #907 in Commander, putting it in the common-include tier of the format's playable pool.
Illustrated by Dmitry Burmak. Rarix tracks 419 other cards credited to this artist across the catalog — browse the full gallery to see the body of work.
Search across TCGplayer, eBay sold, Cardmarket EU, and Star City from the marketplace deeplinks above to compare live listings.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Dmitry Burmak
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
