Dimir Control has no red cards and almost no artifacts, so Breath Weapon's board-sweep upside is minimal versus their small creature package (Baleful Strix, Spellstutter Sprite) while Barrels' 5-mana removal is too slow in a grindy matchup where counterspells matter more. Annoyed Altisaur is a huge trampling threat with Cascade that dodges their removal suite less easily but still adds pressure and card advantage that outvalues their 1-for-1 removal. Vandalblast's overload mode can wipe their lone artifact creatures (Baleful Strix, Mukotai Ambusher) but is mostly a sideboard flex; keep focus on resolving big threats and grinding through Counterspell and Snuff Out with sheer card quality from Ancient Stirrings and Unfathomable Truths.