Whenever a creature you control attacks alone, it gains double strike until end of turn.
Fire Cross — Whenever Seifer Almasy deals combat damage to a player, you may cast target instant or sorcery card with mana value 3 or less from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.
Suit up Seifer (or another lone attacker) and swing solo to trigger double strike, then connect with Seifer to free-cast cheap burn and value spells from your graveyard. You grind incremental advantage through repeated combat triggers and protect your single attacker with equipment, evasion, and a low mono-red curve.
Built-in double strike makes any single attacker hit twice, doubling Voltron damage and Seifer's own Fire Cross potential
Free-casting instants/sorceries every combat generates relentless card and tempo advantage
Cheap to recast at four mana and immediately threatening as a Voltron commander
Mono-red consistency keeps mana clean and lets you run powerful colorless equipment
Double strike only triggers when attacking alone, so wide boards and tokens fight your own commander's ability
Relies on connecting in combat; blockers, fogs, and removal stall the whole engine
Mono-red lacks card draw, ramp, and recursion compared to other colors
Fire Cross is capped at mana value 3 or less, limiting the ceiling of free spells
Protection plus card draw and damage that snowballs a lone unblockable Seifer.
Add more efficient evasion and protection (Whispersilk Cloak, Mask of Memory, Lightning Greaves) so Seifer connects reliably, and tune your spell base toward impactful three-mana-or-less instants and sorceries that Fire Cross can recur. Improve mana with fast rocks (Sol Ring, Arcane Signet) and consider extra-combat or unblockable enablers to stack multiple Fire Cross triggers per turn for explosive bursts.