2Clash Royale card guide
Bats are a cheap, fast flying swarm of five. They're very efficient against single-target cards.
Use Bats against single-target and charging cards like Mini P.E.K.K.A, Inferno Tower and Inferno Dragon. On offense they add quick extra damage with Miner or Mega Knight. In cycle decks they're cheap air defense.
Cards that deal with it efficiently:

This card has an evolution. The evolution is active in your deck’s 1st (Evolution) or 3rd (Wild) slot. The Evolution slot unlocks at Arena 3, the Wild slot at Arena 10.
ElixirDeck automatically takes your unlocked evolutions and heroes into account: build your decks.