Berg Strider

Eisbergschreiter (Berg Strider) (de)

Snow Creature - Giant Wizard | Power/Toughness: 4 / 4 (CMC 5)
When Berg Strider enters the battlefield, tap target artifact or creature an opponent controls. If was spent to cast this spell, that permanent doesn't untap during its controller's next untap step. ( is mana from a snow source.)