A "doomstack" is a large and powerful army that comprises the majority of a nation's available combat power, using elite troops and significant mage support along with a significant commitment of gems for battlemagic and battlefield-wide buffs.

They are used whenever a player wants to put forth maximum effort to win a symmetric battle against another large army.

They are often countered by asymmetric means by nations that cannot fight them head on, so designing a doomstack to anticipate and respond to these asymmetric counters is important. Doomstack counters include:

  * Battlefield-wipe spells like ??Foul Vapors?? or ??Earthquake??, which can do great damage even if their caster dies
    * Players can ensure that their army is resistant to the most common ones using spells like ??Serpent's Blessing?? or ??Mass Flight??, include elements that can disable a suicide caster quickly, and plan for castle sieges carefully
  * Remote attack spells like ??Murdering Winter??, ??Flames from the Sky??, or ??Leprosy??
    * Players can mitigate remote attacks by only assembling a doomstack when it is needed to fight, using resilient troops wherever possible, putting resistance gear on vulnerable mages, masking it with ??Cauldron of the Elven Halls??, feigning doomstacks at other times and places with false army items, and protecting it when possible using [[domes]]. 
  * Specially-designed supercombatants tailored to be immune to that army's capabilities
    * Players can include things that can kill a reasonably wide range of supercombatants in their armies and anticipate what sort of extreme-high-end supercombatants an opponent might field.
  * Ignoring the doomstack and using smaller forces to raid an opponent's other provinces, so that the assets gained by the doomstack are less valuable than the assets lost to hostile raiding
    * Players can respond to raiding in a number of ways, but in this context can do so by only assembling doomstacks when absolutely necessary to force a critical objective and using mobility tools such as ??Gateway?? to assemble and disperse large armies quickly