Caw Gates leans on cheap white creatures like Sacred Cat and Outlaw Medic backed by Prismatic Strands to grind through combat, so Arms of Hadar's -2/-2 to all their creatures is a strong sweeper against their small bodies. Nihil Spellbomb exiles their graveyard to stop Sneaky Snacker's return trigger and Malevolent Rumble's incidental value, plus it can draw a card to replace itself. Spell Pierce is weak against a deck centered on creature threats that can easily pay {2} with Gate mana, and Ice Tunnels are fine to trim for a faster, more proactive mana base against their grindy plan. Agony Warp remains an efficient answer to Guardian of the Guildpact because its multicolored identity bypasses protection from monocolored, while Snuff Out efficiently answers nonblack creatures like Outlaw Medic.