Threefold Signal 
Artifact
When this artifact enters, scry 3.
Each spell you cast that's exactly three colors has replicate . (When you cast it, copy it for each time you paid its replicate cost. You may choose new targets for the copies. A copy of a permanent spell becomes a token.)
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL