Mono Red Rally floods the board with cheap creatures and artifacts and tries to finish with Rally at the Hornburg or a burn-assisted alpha strike. Because nearly all of their deck is red, Blue Elemental Blast and Hydroblast are live in this matchup: they counter or destroy red spells and permanents such as Lightning Bolt, Galvanic Blast, Rally at the Hornburg, Goblin Bushwhacker, Burning-Tree Emissary, and Goblin Tomb Raider. Gingerbrute is colorless, so those two cards can't touch it. Steel Sabotage has real targets in their artifacts (Clockwork Percussionist, Inventor's Axe, Gingerbrute), either countering one on the stack or bouncing one in play. Burning-Tree Emissary is not an artifact, so Steel Sabotage can't hit it. Gut Shot only deals 1 damage, so it is best against their 1-toughness creatures like Goblin Bushwhacker, Clockwork Percussionist, Voldaren Epicure, and Gingerbrute. It does not kill Burning-Tree Emissary (2/2) or an artifact-powered Goblin Tomb Raider. Since we can only pay 2 life for it, we bring in just two copies against a burn deck. Deem Inferior, Sleep of the Dead, Mental Note, and the slower card-advantage spells come out because this matchup is a race decided by cheap interaction, not grinding card advantage.