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 $22.75. Over the trailing 90 days the price moved between $7.72 and $22.75 across 46 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 2 catalogued treatments from 10E — the lineup includes Foil 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 #91★ of *Tenth Edition*, the set that shipped alongside the July 2007 Tenth Edition 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.
