Dimir Control grinds with Stock Up, discard from Deceit and Duress, and removal like Requiting Hex, Bitter Triumph, and Day of Black Sun, so Boomerang Basics is weak since it rarely answers their hand disruption or sweepers. Spell Pierce comes in to protect your threats from removal and can strand a key spell like Doctor Doom or Requiting Hex on the draw. Soul-Guide Lantern and Ghost Vacuum give you graveyard disruption and incidental card selection against a grindy opponent. Deploy threats in waves to play around Day of Black Sun and their one-for-one removal, and use your cantrips to dig for gas since the game can go long.