Mono Red Rally wants to flood the board with cheap artifacts and creatures like Burning-Tree Emissary and Clockwork Percussionist before finishing with Rally at the Hornburg, so Hydroblast can destroy red permanents like Kessig-style threats or counter a red spell at a key moment, while Steel Sabotage counters their artifact creatures like Clockwork Percussionist or Refurbished Familiar-type threats before they combo off. We cut the slowest tempo creatures for more targeted interaction since this matchup can end very quickly and we need answers on curve. Counterspell should be held for Rally at the Hornburg itself when possible since that's their most explosive turn.