A noncreature permanent that turns into a creature is subject to the "summoning sickness" rule: It can only attack, and its {T} abilities can only be activated, if its controller has continuously controlled that permanent since the beginning of their most recent turn.
If a noncreature artifact becomes an artifact creature this way and then another effect animates it, the new effect overrides March of the Machines's effect. For example, Chimeric Staff is a 4/4 creature while March of the Machines is on the battlefield. If you activate Chimeric Staff's ability and choose X = 5, Chimeric Staff will be a 5/5 artifact creature for the rest of the turn.
If an Equipment becomes a creature, it can no longer equip a creature. If it's currently attached to a creature, it becomes unattached (but remains on the battlefield). You can activate the Equipment's equip ability, but it won't do anything.
Last observed on Scryfall 2 months ago at $0.55. Over the trailing 90 days the price moved between $0.02 and $0.61 across 49 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 3 catalogued treatments from MRD — 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 #42 of *Mirrodin*, the set that shipped alongside the October 2003 Mirrodin release.
Card type: Enchantment, color identity blue, printed at rare. Rares occupy the bottom-of-pack rare slot in standard boosters. Mana cost: {3}{U} (4 converted).
Legal in Modern, Legacy, Vintage, and Commander.
EDHrec ranks this card #14,089 in Commander, putting it in the fringe-play tier of the format's playable pool.
Illustrated by Ben Thompson. Rarix catalogs 247 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Ben Thompson
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
If a noncreature artifact is also another card type, such as enchantment or land, it will retain those types in addition to being an artifact creature.
Each artifact land has a mana value of 0. March of the Machines makes them 0/0 creatures, which are put into the graveyard as a state-based action.
