Tactic cards
In the beginning of season 4 at profession level 100 , your profession skills will stop and become tactic cards , you start collecting cards , you upgrade them when you get several of the same type , you can upgrade you card by using experience

4+1 : refers to a powerful Tactics Card, using four heroes of the same type (e.g., Tank, Air, Missile) plus one flexible hero (like Murphy or Lucius) to gain a significant 5-type bonus, often maximizing damage or defense against specific enemy formations,

How it works

  • You equip a special Tactics Card that grants a bonus (like +50% Damage or Defense) when four heroes of the same type are in a squad, plus one different hero.
  • This bonus is extremely potent, often more effective than standard 5-hero builds, as seen by massive power gains during seasons where these cards are active. 

Popular 4+1 Squad Compositions (Examples)

  • Tanks Squads: Scarlett/ stetman , Kim, Murphy, Adam, Marshall (great against air).
  • Missile Squads: Lucius (Air) in a missile squad is strong for defense/survivability against tanks
  • Air Squads: Often use Murphy as the flexible slot for high survivability against missiles (maybe Morrisson out)
    You can still keep your current line up , but in case you’re interested in changing and benefiting from the care , you need to start upgrading the skills of your flexible hero . And upgrade his defense tech