Sideboard Philosophy

Axis 1 · Silent versus Deadly Weapon

Silent is resilient, tall, and best against targeted interaction. Deadly Weapon is cheaper, repeatable damage, and best against wide small-unit boards.

Axis 2 · tricks versus actual bodies

Brynhir and Ferrous let you increase unit density when the opponent can exhaust your limited threats. Ferrous Forerunner is a six-Might body whose Deathknell produces two 3-Might Mech tokens at base, making it the deck’s best attrition and reconstruction card.^◆src

Axis 3 · tactical interaction versus structural answers

• Against the Odds answers width.
• Not So Fast answers targeted interaction.
• Thermo Beam answers Gear engines.
• Brynhir answers turns built around cards from hand.
• Ferrous answers prolonged unit attrition.

Default sideboarding rules

• Avoid falling below 16 shuffled units.
• Remove Mask before casting Thermo Beam when practical.
• Cleave is the first spell cut when the matchup is not about attacking through one defender.
• Inferna is the first unit cut when its Ambush body is unlikely to trade profitably.
• Do not bring Not So Fast against decks that mostly target their own units.
• Do not switch to Deadly Weapon merely because the opponent has units — the damage must reach meaningful breakpoints.
• Bring Brynhir only when the game will reach six Energy and stopping card play creates a decisive turn.