Got the Mono Red Aggro 2021 Challenger deck and want to make it better? Look no further then our Mono Red Aggro Upgrade Guide!
There is a budget upgrade and a full upgrade for each of the 2021 Challenger decks. You can decide which one will work best for you.
Mono Red Aggro Challenger Decklist
Creature (27) 4 Fervent Champion 4 Kargan Intimidator 4 Bonecrusher Giant 3 Torbran, Thane of Red Fell 4 Akoum Hellhound 4 Rimrock Knight 4 Anax, Hardened in the Forge Sorcery (6) 2 Shatterskull Smashing 4 Roil Eruption Instant (8) 4 Spikefield Hazard 4 Shock Artifact (1) 1 Embercleave Land (18) 2 Castle Embereth 16 Mountain | Sideboard (15) 2 Relic Robber 2 Roiling Vortex 2 Soul-Guide Lantern 4 Redcap Melee 3 Thundering Rebuke 2 Soul Sear |
Mono Red Aggro Challenger Deck 2021 Budget Upgrade
The Challenger Decklist for Mono Red Aggro is very solid, but there are some important budget upgrades, that can take the deck to the next level. Let’s take a look at the cards we change for the upgrades.
(Out/In shows which cards will be replaced and what for.)
- OUT: 4 Akoum Hellhound IN: 4 Fireblade Charger
- OUT: 4 Spikefield Hazard IN: 4 Faceless Haven
- OUT: 4 Shock IN: 4 Frost Bite
- OUT: 16 Mountain, 3 Roil Eruption IN: 19 Snow-Covered Mountain
- OUT: 1 Roil Eruption, 1 Castle Embereth IN: 2 Embercleave
Creature (27) 4 Fervent Champion 4 Kargan Intimidator 4 Bonecrusher Giant 3 Torbran, Thane of Red Fell 4 Fireblade Charger 4 Rimrock Knight 4 Anax, Hardened in the Forge Sorcery (2) 2 Shatterskull Smashing Instant (4) 4 Frost Bite Artifact (3) 3 Embercleave Land (24) 4 Faceless Haven 1 Castle Embereth 19 Snow-Covered Mountain | Sideboard (15) 2 Relic Robber 2 Roiling Vortex 2 Soul-Guide Lantern 4 Redcap Melee 3 Thundering Rebuke 2 Soul Sear |
Let’s take a look at why these upgrades are beneficial to the deck:
Budget Upgrades Explained
The first upgrade that I would recommend is swapping Akoum Hellhounds for Fireblade Chargers.

Hellhound may seem like an appealing card, as it’s a one drop that is able to attack for two. However, most of the time it’s just a 0/1. In addition, it also has zero late game presence and is a poor blocker.
Because of this, we switch it for Fireblade Charger, which is a much better card for the deck. Unlike Akoum Hellhound, it is able to trade for most one and two drops in Standard, and can often be a 2-for-1 if it eats a removal spell and kills a one-drop. It also never becomes a completely dead card, as even if it is killed by a larger creature, it still deals one damage to the opponent.
Mana Base Changes
We also completely change up the mana base to support better flex lands and Frost Bites. While Spikefield Hazard is a flex land, it is a poor one. Dealing only one point of damage is a small upside compared to entering the battlefield tapped. This tempo loss can be devastating for a deck like Mono Red. The downside of entering tapped and preventing the deck from curving out is not worth the upside of one damage.

Compare this to Faceless Haven, which provides a 4/3 creature and still enters untapped, and it is clear that Faceless Haven is a much stronger inclusion for Mono Red Aggro. In addition to this, the fact that Faceless Haven is considered a land until you activate it is very important in the current Standard, as it dodges many sorcery speed board wipes such as Extinction Event and Shadows’ Verdict.
One of the advantages of playing a Mono- Colored mana base is playing flex lands, and between our Castle Embereths and Faceless Havens, this upgraded list takes full advantage of the flex lands available.
To support our Faceless Havens, we replace all 16 Mountains and 3 Roil Eruptions with 19 Snow-Covered Mountains.
We also replace 4 Shocks with 4 Frost Bites. This version of Mono Red Aggro wins through board presence rather than burn spells, and Frost Bite clears out more opposing creatures than Shock.

The final change made for budget upgrades is replacing 1 Roil Eruption and 1 Castle Embereth for 2 Embercleaves. Embercleave is a key card in any Mono Red Aggro deck list, creating the possibility for early wins and unexpected combat tricks. We have also added more lands through the budget upgrades, so we can cut a Castle Embereth.
Sideboard
I have not suggested any budget upgrades to the sideboard, because I believe that it is more important to have an optimized main deck first. However, sideboard upgrades will be included in the optimized decklist.
Budget Upgrade – Step by Step
However if you want to start slowly upgrading your MTG 2021 Mono Red Aggro Challenger Deck, I would recommend the following upgrades:
- Firstly, the Akoum Hellhounds for Fireblade Chargers.
- Then the larger upgrade of Basic Mountains and 3 Roil Eruptions for Snow-Covered Mountains. Also swap Spikefield Hazards for Faceless Havens and the Shocks for the Frost Bites.
- After this, you should work towards acquiring Embercleaves.
Mono Red Aggro Challenger Deck 2021 – Full Upgrade
Creature (27) 4 Fervent Champion 4 Robber of the Rich 4 Bonecrusher Giant 3 Torbran, Thane of Red Fell 4 Fireblade Charger 4 Rimrock Knight 4 Anax, Hardened in the Forge Sorcery (2) 2 Shatterskull Smashing Instant (4) 4 Frost Bite Artifact (4) 4 Embercleave Land (23) 4 Faceless Haven 19 Snow-Covered Mountain | Sideboard (15) 3 Redcap Melee 2 Soul Sear 2 Scorching Dragonfire 2 Phoenix of Ash 1 Soul Sear 2 Embereth Paladin 1 Mythos of Vadrok 2 Ox of Agonas |
Our Full upgrade is based on Kai Budde’s February league weekend decklist. Let’s take a look at the changes between our final upgrade and our budget upgrade, in both the Maindeck and sideboard.
Main Deck
- OUT: 4 Kargan Intimidator IN: 4 Robber of the Rich
- OUT: 1 Castle Embereth IN: 1 Embercleave
Sideboard – OUT
Sideboard – IN
As you can see, there are not many changes left to make in the main deck, but many in the sideboard. Let’s examine the changes in the main deck first.
Full Upgrade – Explained
Firstly in the main deck, we replace 4 Kargan Intimidator for 4 Robber of the Rich. While Intimidator is a strong card, Robber has haste and is also one of the lone sources of card advantages for Mono Red Aggro.

The other change to the main deck is replacing 1 Castle Embereth with 1 Embercleave. There are already 25 lands in the deck including Shatterskull Smashing, so the extra Castle Embereth is unnecessary.
Mono Red Aggro wants to be playing 4 Embercleaves due to its sheer power in the deck. After a few games, you will see why people who play Mono Red Aggro often say “believe in the cleave”.
Sideboard
As for the sideboard, I have copied Kai’s league weekend sideboard. This is just a recommendation of a successful sideboard, I would recommend building your own fifteen card sideboard based on what decks you expect to be playing against the most.
New cards added:
- Main deck: 38
- Sideboard: 10
- Total: 48
Charging Out
That’s all you need to know about upgrading Mono Red Aggro on a budget and into its final form. Hopefully, this Mono Red Aggro Upgrade Guide will help you make your deck better and win many games.
If you want to get the Mono Red Aggro Challenger Deck, you can buy it on Amazon. Additionally, you might want to get some sleeves and a deck box. You can find best MTG sleeves here, and deck boxes here.
Want to read about the other Challenger Decks? Check out our Challenger Deck 2021 Guide.
Until next time, and believe in the cleave!
For the budget sideboard, would demon bolt be a good card
It’s not optimal, but if you’re playing in more casual metagame, it could work in a pinch.
Otherwise you’d probably rather play Redcap Melee (more efficient), or maybe even Shock, as it can also target your opponent.
I’m not used to having more than one legendary of the same type. Is 3 x Torbran …too many for this?
Torbran is so powerful that you want to draw it every game with a deck like this. Since it’s legendary you don’t play 4 copies but 3. There’s no need to go below that number, because it’s a key card in the deck.
Just keep in mind, that this deck is no longer Standard legal, so perhaps there’s an even stronger option that wasn’t considered when this article was written.