Trigon of Thought 
Artifact
This artifact enters with three charge counters on it.
, 
: Put a charge counter on this artifact.
, , Remove a charge counter from this artifact: Draw a card.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL