Whenever one or more Pirates you control deal damage to your opponents, exile the top card of each of those opponents' libraries. You may play those cards this turn, and you may spend mana as though it were mana of any color to cast those spells.
Partner (You can have two commanders if both have partner.)
Flood the board with Pirates and wide, evasive aggro, then connect with multiple creatures so each combat steals cards off opponents' libraries via Breeches. You impulse-cast those exiled cards (any color, thanks to Breeches' mana fixing) to snowball card and mana advantage while chipping life totals, closing with a big alpha strike or a go-wide haymaker. Partner lets you pair Breeches with a second commander to add a strategy or color.
Generates massive card advantage in mono-red, the format's most card-starved color
Effectively grants you off-color spells, letting a red deck cast anything you exile
Menace plus a wide Pirate board makes connecting and triggering Breeches reliable
Partner flexibility (e.g. with Malcolm or Tormod) opens new colors and synergies
Cheap, aggressive curve punishes slow durdle and ramp decks
Stealing cards costs nothing if you can't use exiled cards same turn—mana can bottleneck
Dies to a single removal spell, stalling the whole impulse engine
Board wipes and Fog effects neuter the go-wide combat plan
Relies on dealing combat damage to opponents, so blockers and deathtouch slow you down
Mono-red baseline lacks ramp and protection without partner support
Doubles Treasure value, turning your impulse-cast engine into explosive mana.
Lean into a partner—Malcolm for blue card flow and evasion, or Tormod for a graveyard angle—to escape mono-red's limits. Add fast mana (Sol Ring, Treasure makers, Jeska's Will) so you can actually cast the cards Breeches exiles, and prioritize unblockable/menace enablers plus cheap protection like Heroic Intervention and Deflecting Swat to keep the engine online. Tighten the curve toward a critical mass of Pirates and Treasure synergies, then add a combo finish (Krark/Sakashima loops or extra-combat effects) for higher power.
Legendary Creature — Goblin Pirate
