The Bats are somewhat like faster, aerial Skeletons, except they cannot be used to pull units that only target ground units.
They can be a replacement for Minions and are a better counter for all air units but Baby Dragon. However, they have significantly lower hitpoints, slightly lower damage and thus can be killed in one shot by many ground units that target air like Witch or the Princess Tower. They also pose much less of a threat when used for attacking.
However, they can deal significant damage when paired with a tank such as the Miner, due to their high movement speed.
The Zap is a neutral elixir trade for the Bats, though they may be used to "bait" Zap for other swarms after that.
They can be used to counter the Graveyard for a 3 Elixir profit.
On 12/6/17, a Balance Update decreased the Bat's count to 4 (from 5). The Bats have not been released at the time of the Balance Update.
The Bats card was made available as a one-time reward from a special Draft Challenge that started on 23/6/17, meaning the card could be unlocked before it was generally released.
From 30/6/17 through 3/7/17, the Shop had a special offer that Arena 8+ players can buy up to six Giant Chests at the normal price that guarantee at least 40% of total cards (or 50% of all common cards) to be Bats.
The Bats card was added to the game on 7/7/2017.
Bats have the same stats as Skeletons of equal level except they fly, they target air, have a very fast move speed, have one more bat and cost 1 more elixir.
Bats and Balloon are the only 2 flying troops with a melee attack range.
The Night Witch summons Bats that are identical to the ones spawned here.
When the card was first announced, there was a mistake in the description stating there were "Four" bats instead of five, and many got confused as the count statistic stated the correct "5". The mistake was quickly fixed and the description was changed to "Five". The card was then nerfed, changing the description and number of bats back to "Four".