In the terms of deck consistency, nothing beats Mono-colored decks because, obviously, they are mono-colored. A deck can basically play just basic lands or the recent Snow-covered lands and not worry about the mana color issues to pay for their spells. In the terms of Standard deck build, the Mono-Red Aggro deck stands out as the most consistent in its gameplay against the top decks in the Kaldheim Standard format.

In the recent Standard Champs in Magic Online last weekend, which were composed of 143 players, the top finisher and champion, Mono Red Aggro, was played by username bolov0. Here below is the full decklist.

Red Deck Wins a Standard deck by bolov0
1 Phoenix of Ash
3 Torbran, Thane of Red Fell
3 Rimrock Knight
4 Robber of the Rich
4 Fireblade Charger
4 Fervent Champion
4 Bonecrusher Giant
4 Anax, Hardened in the Forge
4 Embercleave
4 Frost Bite
2 Castle Embereth
4 Faceless Haven
19 Snow-Covered Mountain
// Sideboard:
SB: 2 Redcap Melee
SB: 2 Soul Sear
SB: 2 Scorching Dragonfire
SB: 2 Roiling Vortex
SB: 2 Phoenix of Ash
SB: 2 Ox of Agonas
SB: 3 The Akroan War