Killmonger laughs at your 1-cost cards, and at silly Deathlok hanging out in a dead lane.
One tiny bit of explanation: the only purpose of Squirrel Girl is to combo with Falcon on turn 5 as a Moon Girl substitute. It's 3 cards for The Collector, and one extra Angela buff without using up one of your four slots. If you draw Moon Girl, Squirrel Girl is irrelevant.
