Ashnod's Transmogrant

Mono Artifact    (CMC:1)

, Sacrifice Ashnod's Transmogrant: Put a +1/+1 counter on target nonartifact creature. That creature becomes an artifact in addition to its other types.

Ashnod found few willing to trade their humanity for the power she offered them.

152 ME1 • ENMark Tedin

™ & © 1993—2007 Wizards of the Coast

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

Oracle Text (click to copy):

9/16/2007
It's the ability, not the counter that makes the creature an artifact.  The creature remains an artifact even if the +1/+1 counter is removed.