BRG is full of cheap small creatures (Gene Pollinator, Greedy Freebooter, Callous Inspector) that Requiting Hex picks off efficiently while gaining you life to fuel Amalia and Lunar Convocation. Deep-Cavern Bat trades with their small creatures, flies over their ground stuff, and strips their best card from hand (especially Strategic Betrayal or a removal spell) before it matters. Dark Confidant adds card advantage to grind through their removal-heavy 75, which is reasonable here since your curve is low. Goldmeadow Nomad, Resolute Reinforcements, and Aunt May are undersized tokens/bodies that don't profitably trade or block against their aggressive ground creatures.