Legendary Creature — Human Noble Soldier

Duke Ulder Ravengard

Mana value6EDHREC#6,639

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The Commander

At the beginning of combat on your turn, another target creature you control gains haste and myriad until end of turn. (Whenever it attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Guide

Gameplan

Pick a creature with a powerful combat or attack trigger, give it myriad each turn, and swing at all three opponents at once to multiply that trigger across the board. You ramp toward big threats, protect your key attacker, and turn a single connect into overwhelming damage, tokens, or value before the copies are exiled.

Strengths

Triples attack-trigger and combat-damage payoffs every turn for free
Excellent at pressuring all opponents simultaneously, making it a strong politics and threat-spreading deck
Boros aggro gets a built-in repeatable value engine instead of running out of gas
Synergizes with go-wide and big-creature strategies alike

Weaknesses

Myriad copies are exiled at end of combat, so the value is fleeting if not converted
Heavily reliant on having a good attacker; without one the ability does little
Red-white lacks card draw and ramp compared to other color pairs
The targeted creature is vulnerable to removal in response to the combat trigger
Six-mana commander that doesn't immediately impact the board

Key Cards

Combat Celebrant — Its exert grants an extra combat step, and myriad copies each trigger to chain multiple attack phases.
Etali, Primal Storm — Myriad copies each cast free spells off the top of every player's library for explosive value.
Hellkite Tyrant — Steals all permanents from each opponent it damages, and myriad lets it threaten everyone at once.
Ognis, the Dragon's Lash — Generates Treasure for every creature dealing combat damage, and a myriad swarm floods you with mana.
Bedlam — Forces creatures to attack and removes blocking, ensuring your myriad attacker connects across all opponents.
Aurelia, the Warleader — Untaps your team for a second combat, doubling Ulder's myriad triggers in a single turn.

Upgrade Path

Prioritize creatures whose attack or combat-damage triggers scale explosively with copies (Etali, Hellkite Tyrant, Combat Celebrant) and add extra-combat enablers like Aurelia and Aggravated Assault. Shore up Boros's weaknesses with fast mana (Sol Ring, Smothering Tithe, Treasure makers) and card advantage from impulse draw. Include protection like Heroic Intervention and ways to force damage through such as Bedlam and trample to maximize myriad payoffs.

Core Cards

The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.

Win Conditions

▸Hitting all opponents with myriad copies of a high-power creature for repeated damage
▸Chaining extra combats with Aurelia or Combat Celebrant for a lethal alpha strike
▸Snowballing value off attack triggers (Etali, Hellkite Tyrant) into an unbeatable board
▸Commander-damage and Voltron beatdown with an evasive buffed attacker

Archetypes

Aggro/Combat Triggers — Ulder multiplies any attack-trigger creature across every opponent each combat.
Voltron — Granting haste and myriad to a single buffed threat lets it deal lethal commander damage spread or focused.
Tokens/Go-Wide — Free attacking token copies each turn extend a wide board and pressure the whole table.
Politics — Myriad lets you choose who to swing at, leveraging deals and threats across opponents.