4/5c Aggro comes out of the gates fast with a wide, multicolor board presence, so your priority is surviving the early turns and winning the mid-game race with superior threats. Pawpatch Formation gives you instant-speed interaction to protect your key creatures or trade favorably in combat, which is critical against a deck that will try to punch through before your landfall payoffs come online. Royal Treatment protects your most important threat from targeted removal or bounce effects that aggressive decks sometimes pack in their sideboard. The additional copy of Surrak, Elusive Hunter provides a resilient, evasive threat that can break through board stalls and close out games where the opponent has stabilized with a wide board. Meltstrider's Resolve and Archdruid's Charm are trimmed as they offer less immediate impact in a race where board presence and combat tricks matter more than incremental value.