Snow Mercy 
Snow Enchantment
Whenever a creature deals damage to you, put a globe counter on it.
, 
, , , : Tap all creatures with globe counters on them.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL