Witch

Summary
This card is unlockable from the Training Camp (Tutorial). Every three seconds, the Witch will passively summon a group of three Skeletons.

Strategy
The Witch should be placed far behind high hitpoints troops such as the Giant so that it can have enough time to summon its Skeletons and provide offensive support. The Witch's Skeletons can be taken out easily. Make sure you have a group of distracting troops to keep the Witch from being targeted. It is highly unrecommended to spawn the Witch next to the player's Crown Tower, as a single Lightning can take out the Witch and damage the Crown Tower. Witches are also useful against slow attacking troops. Her skeletons can distract troops like a Prince whilst the Arena Towers and/or the Witch attacks it. Witches can also be used to counter swarms. Her splash damage makes her a good choice against swarms.

Trivia
On 11/01/16, the Balance Update decreased the Witch's spawned Skeletons level by 1. On 19/2/16, the Balance Update increased her damage by 3%. The Witch is one of the seven cards associated with skeletons, including the Skeletons, Skeleton Army, Tombstone, Giant Skeleton, Balloon and Bomber. There was a bug with the Witch where it can be trapped in a corner of your territory by any buildings, such as the Goblin Hut or Barbarian Hut, which players utilize to use the Witch as an additional spawner, before the building trapping the Witch is destroyed and she can continue on as a normal troop. However, the early February update fixed the 'Stuck Witch' bug. When fully levelled, the Witch can summon level 13 Skeletons; the highest level of Skeletons upgradeable being level 12. The Goblin Barrel shares the same trait, except it spawns Goblins upon the spell's impact.