Goose into Mystique is pretty gross because it locks out 2 locations from 4 5 or 6 cost cards, with cosmo potentially stopping any on-reveal affects from triggering in the third location (odin white tiger being the most prominent examples) . Also Solid packages like Quinjet/Moon Girl/Dino and Carnage/Nova to help bolster up the deck. America Chavez is there just as a solid finisher than can win over the non-goose zone and to deck thin from turns 1-5, Captain Marvel is there in case you want to move 6 power into one of the goose zones, and Ice man and Yondu are just solid disruption 1 drops, with Yondu ideally being played turn 4-5 to mill off the opponent's America Chavez.