4c Legends plays a huge number of cheap MV2-or-less legendary creatures like Gran-Gran, Zack Fair, and The Wondrous Wasp, making Seam Rip a premium exile effect to remove their early plays. Flashfreeze stays out since their deck is mostly white, blue, and black with few red or green spells worth countering. Spell Snare and Enduring Curiosity are trimmed slightly in favor of more proactive disruption given the wide array of small legendary threats they can deploy. Prioritize exiling their cheapest legends before they can be protected or grow the board, and watch for Red Guardian, Super-Soldier picking off your attackers.