Overview:

This Boros deck helmed by Rem Karolus, Stalwart Slayer focuses on aggressive creature strategies, leveraging damage amplification and token synergies. The commander provides a unique damage inversion effect, protecting your board while supercharging offensive spells and combat damage. The deck employs a mix of go-wide token strategies (Assemble the Legion, Horn of Gondor), Angel tribal payoffs (Avacyn, Angel of Hope, Righteous Valkyrie), and combat tricks (Blade Historian, Shared Animosity). Rem Karolus acts as both a protective engine and damage multiplier, enabling explosive turns with cards like Blasphemous Act or City on Fire. While not combo-centric, the deck can lock opponents out with stax pieces like Archangel of Tithes and Grand Abolisher while building overwhelming board states.

Primer:

Core Strategy Execution:

1. Early Setup (Turns 1-4): Deploy mana rocks (Sol Ring, Boros Signet), token generators (Legion Warboss, Professional Face-Breaker), and protection (Esper Sentinel, Grand Abolisher). Use Land Tax/Smothering Tithe for ramp.
2. Midgame Pressure (Turns 4-7): Cast Rem Karolus to enable damage-based board wipes (Blasphemous Act becomes one-sided) and deploy key angels (Aurelia, the Warleader, Battle Angels of Tyr). Activate token multipliers like Mondrak, Glory Dominus and Horn of Gondor.
3. Win Conditions (Turns 6-9):
   • Combat Overkill: Use Blade Historian/Gisela, Blade of Goldnight for double/triple damage. Shared Animosity and Flowering of the White Tree turn token armies into lethal threats.
   • Damage Amplification: City on Fire triples damage from sources like Inferno Titan or Impact Tremors.
   • Stax Lock: Combine Elesh Norn, Grand Cenobite with Archangel of Tithes to cripple opponents' boards.

Mulligan Priorities:

• Keep hands with 2-3 lands (including color-fixing like Sacred Foundry).
• Prioritize early ramp (Sol Ring, Land Tax) or a turn 1-2 threat (Esper Sentinel, Legion Loyalist).
• Ensure at least one protection piece (Swiftfoot Boots, Boros Charm) if holding key creatures.

Key Tips:

• Use Reconnaissance to pseudo-vigilance your attackers or save them post-combat.
• Teferi's Protection + Blasphemous Act with Rem Karolus on board is a near-board wipe.
• Mondrak, Glory Dominus doubles tokens from Assemble the Legion and Captain of the Watch.

Weaknesses:

Critical

• No graveyard recursion beyond Celestine, the Living Saint – exiled threats are unrecoverable.
• Heavy reliance on Rem Karolus for damage inversion – repeated removal cripples the deck's defensive capabilities.

Moderate

• High average CMC (4.0+) – struggles against fast aggro or combo decks.
• Minimal stack interaction – relies on Grand Abolisher to protect combat phases instead of counterspells.

Minor

• Token strategies vulnerable to Cursed Totem effects – shuts off Professional Face-Breaker and Legion Warboss.
• Life gain synergies underdeveloped – Righteous Valkyrie buffs are inconsistent.

Most Important Cards:

• Rem Karolus, Stalwart Slayer (Damage control/amplification engine)
• Blasphemous Act (One-sided board wipe with commander)
• Mondrak, Glory Dominus (Token multiplier)
• City on Fire (Triple damage finisher)
• Teferi's Protection (Board protection)
• Grand Abolisher (Combat phase lockdown)
• Elesh Norn, Grand Cenobite (Stax piece + anthem)
• Smothering Tithe (Mana acceleration)
• Flowering of the White Tree (Anthem + protection)
• Shared Animosity (Combat damage amplifier)

Attribute Ratings:

Speed: 6/10
Can threaten wins via combat or amplified damage spells by turns 7-9, but high CMC and setup requirements slow early aggression.

Resilience: 5/10
Limited recursion and reliance on Rem Karolus make the deck vulnerable to targeted removal, though protection spells like Mithril Coat help.

Consistency: 7/10
Strong card draw (The One Ring, Battle Angels of Tyr) and tutor density (Enlightened Tutor, land-based ramp) ensure key pieces are accessible.

Interaction: 6/10
Efficient removal (Swords to Plowshares, Chaos Warp) and stax elements, but lacks counterspells and graveyard interaction.

Rating Justification:

This deck operates as a focused midrange strategy with explosive combat finishes, capable of threatening wins by turns 7-8 but held back by commander dependency and high curve. Its resilience against interaction is average, aligning it with optimized casual tiers that win via combat or value engines.

Power level: 5.5 - 6.0