
Haste
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
At the beginning of combat on your turn, each creature you control with a counter on it gains firebending 2 until end of turn. (Whenever it attacks, add . This mana lasts until end of combat.)
Iroh is a mono-red counters-matter aggro/midrange commander that wants a wide board of attackers. Mentor seeds +1/+1 counters each combat, and his trigger turns every countered creature into a firebending mana battery during attacks, generating a flood of you can dump into burn, X-spells, or extra activations. You win by attacking relentlessly while converting combat damage into explosive mana.
Add fast mana (Sol Ring, Jeska's Will, Mana Crypt) and card advantage engines (Outpost Siege, Light Up the Stage, The Reaver Cleaver) to offset mono-red's weaknesses. Lean into extra-combat enablers (Aggravated Assault, Combat Celebrant) and protection like Heroic Intervention substitutes such as Boros Charm to weather wipes. Tighten the curve with efficient token producers and a couple of haymaker X-finishers to ensure the firebending mana always converts to damage.
The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.
→ Infinite combat phases, Infinite red mana, Infinitely powerful creatures you control until end of turn
Combos via Commander Spellbook.
Same color identity (R), by popularity.