Bant Control is heavily blue, running Tundra, Tropical Island, and multiple Islands to support Brainstorm, Ponder, Force of Will, and Force of Negation, so Choke can shut off their ability to hold up countermagic or cast their card draw engines. Thoughtseize strips their Swords to Plowshares, Leyline Binding, or a protective counterspell before we commit a key threat, which is important since they can otherwise one-for-one answer everything we play. Once Upon a Time and extra Boseiju come out since we need to prioritize disruption over card selection against a deck with a long grindy game plan built around Tamiyo, Inquisitive Student and Up the Beanstalk. Our core ramp and big-threat package stays intact since resolving one undisrupted bomb is usually enough to win.