Blood Clock 
Artifact
At the beginning of each player's upkeep, that player returns a permanent they control to its owner's hand unless they pay 2 life.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Artifact
At the beginning of each player's upkeep, that player returns a permanent they control to its owner's hand unless they pay 2 life.