March of the Machines

Enchantment    (CMC:4)

Each noncreature artifact is an artifact creature with power and toughness each equal to its converted mana cost. (Equipment that's a creature can't equip a creature.)

42 MRD • ENBen Thompson

™ & © 1993—2003 Wizards of the Coast

Legal in: Modern,Mirrodin Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Singleton 100,Commander

Oracle Text (click to copy):

March of the Machines {3}{U} Enchantment Each noncreature artifact is an artifact creature with power and toughness each equal to its converted mana cost. (Equipment that's a creature can't equip a creature.)

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12/1/2004
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.
12/1/2004
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.
12/1/2004
Each artifact land has a converted mana cost of 0. March of the Machines makes them 0/0 creatures, which are put into the graveyard as a state-based action.
7/15/2007
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.
10/1/2009
A noncreature permanent that turns into a creature is subject to the "summoning sickness" rule: It can only attack, and its  abilities can only be activated, if its controller has continuously controlled that permanent since the beginning of his or her most recent turn.

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