Hylda's Crown of Winter 
Legendary Artifact
, 
: Tap target creature. This ability costs less to activate during your turn.
, Sacrifice Hylda's Crown of Winter: Draw a card for each tapped creature your opponents control.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL