Reverse the Polarity (Surge Foil) [Doctor Who] Cat Artificer The directors of the Riptide

The directors of the Riptide Project wanted instant results on the sliver experiments

Set: Commander 2013 Type: Artifact Rarity: Rare Cost: {3} You may activate abilities of creatures you control as though those creatures had haste

Set: Commander Masters Type: Creature — Human Cleric Rarity: Rare Cost: {W}{W} During your turn

There is power in the abyss

Set: Secret Lair Drop Series Type: Sorcery Rarity: Rare Cost: {R} Search your library for a card

Reverse the Polarity (Surge Foil) [Doctor Who] Cat Artificer The directors of the RiptideSet: Doctor Who Type: Instant Rarity: Rare Cost: {1}{U}{U} Choose one Counter all other spells. Switch each creature's power and toughness until end of turn. Creatures can't be blocked this turn. You see, before you reactivated it, I reversed the polarity of the neutron flow.