WU's Tamiyo, Inquisitive Student and Phelia, Exuberant Shepherd are both small, resilient threats, and the discard-to-deal-3 mode on Trumpeting Carnosaur answers either one for a single card plus the discard-dinosaur stapled on top. Maelstrom Wanderer is a worse hit off cascade in a matchup full of cheap countermagic like Daze and Force of Will, since it is easy to Stifle or bounce with Teferi, Time Raveler and does not close games fast enough against their tempo plan. Keep leaning on Ancient Tomb to curve out ahead of their Wasteland disruption, and respect that Stifle can strip value off your cascade triggers if you overextend into open mana. The extra Trumpeting Carnosaur also gives you a second discover 5 trigger to find more interaction against their evasive clock.