Clarion Conqueror is a great flying blocker and attacker against their flyers-heavy plan (Momo, Sage of the Skies, Quantum Riddler), and it shuts down Springleaf Drum, since activated abilities of artifacts, creatures, and planeswalkers can't be activated. Note that Abandoned Air Temple is a land, so its counter ability still works, and Conqueror also turns off your own Ajani Resolute loyalty abilities. Curious Farm Animals is a cheap body that gains you 3 life when it dies, which fuels your engines, though it can't block their flyers. Starscape Cleric can't block their fliers and dies to their removal (Seam Rip, Get Lost), so trim some copies. Liliana the Faultless is a fragile 1/1 that falls to any of their removal.