2Clash Royale card guide
Berserker is a cheap melee troop with a very fast attack. Her rapid hits shred small troops and single-target cards.
Use Berserker on defense as a cheap answer to small ground troops and single-target cards. On offense she supports next to a win condition. She's cheap, so she saves elixir in cycle decks.
Cards that deal with it efficiently:

This card has a hero form. The hero is active in your deck’s 2nd (Hero) or 3rd (Wild) slot. The Hero slot unlocks at Arena 5.
ElixirDeck automatically takes your unlocked evolutions and heroes into account: build your decks.