Impulse [Visions] Human Spy It doesn't untap during its

It doesn't untap during its controller's untap step for as long as Ice Floe remains tapped

As soon as she faces a monster

Set: Urza's Saga Type: Sorcery Rarity: Uncommon Cost: {2}{U} Creatures and lands target opponent controls don't untap during their next untap step

One mogg to aim the catapult

Set: Shadows over Innistrad Type: Instant Rarity: Uncommon Cost: {1}{U}{U} Counter target spell

Impulse [Visions] Human Spy It doesn't untap during itsSet: Visions Type: Instant Rarity: Common Cost: {1}{U} Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. "Controlling time ensures you need never look impulsive again." Teferi