Is Berg Strider legal in Standard, Modern, and Commander?

Berg Strider is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

What type of card is Berg Strider?

Berg Strider is a Snow Creature — Giant Wizard. Its oracle text reads: "When this creature enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step. ({S} is mana from a snow source.)"

Berg Strider

Snow Creature — Giant Wizard

When this creature enters, 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.)