Explore strategic identity, card composition, and version history for each Battle Deck.
Critical Mass
Building an army takes time, plenty of corpses, and a good necromancer.
Critical Mass is an aggressive Blue/Black deck built around the Amass mechanic. Every card you play adds to the board, and makes your Army bigger and more deadly!
A fast Blue-Black deck that applies immediate pressure using aggressive early plays like Callous Dismissal and Eternal Taskmaster and aims to close games before opponents can stabilize.
Signature Cards
Keywords
AmassFlying
Game Plan
Early Game
Turns 1-2
Deploy Callous Dismissal and Eternal Taskmaster as early as possible and commit to attacking. Every turn you don't attack, you fall behind on your plan.
Mid Game
Turns 3-4
Maintain pressure while watching for open attacks. Use your interaction to clear blockers rather than save it for defensive purposes.
Late Game
Turn 5+
With most of your hand played out, aim to finish the game before topdecking. Prioritize evasive threats.
Deck Play Profile
Derived from automated card-by-card analysis across all known versions. The Capability Profile shows how the deck measures up across six functional dimensions — pressure, interaction, card advantage, and more. The Play Style hexagon uses the same data to place the deck on the aggro–control–combo–midrange spectrum.
Capability Profile
Play Style
Deck average (all versions)
Strengths & Weaknesses
Fast clock that puts opponents on the defensive immediately
Consistent early game due to low mana curve
Vulnerable to mass removal and lifegain that disrupts the damage race
Poor late game — topdecks are weak when the hand is empty
