Thraben Charm's damage scales with your creature count and cleanly kills Burning-Tree Emissary, Clockwork Percussionist, Goblin Bushwhacker, or Voldaren Epicure before Rally at the Hornburg can turn their board lethal. Clowning Around's tokens are too slow against a deck that floods the board as early as turn two or three, so cut it; you need removal to break up their alpha strike, not incremental card advantage. Keep Dispatch and your cheap creatures to trade profitably and disrupt their critical mass.