UW Control aims to answer everything and generate card advantage through their control spells. Aven Interrupter is your premier disruption piece — countering key spells or planeswalkers while providing a relevant body on the battlefield. Wistfulness helps rebuild card parity after trades. Kutzil's Flanker applies pressure while disrupting their answers. Bovine Intervention has no relevant targets in a creatureless control shell, Rest in Peace and Cathar Commando are irrelevant, and Avatar's Wrath does nothing when they have few or no creatures.