The Spell Launcher is a defense unit (or trap) that shoots a spell in the air once triggered.

Lightning Spell: Once Triggered the Lightning Spell will kill all enemy troops in radius.

Healing Spell: The healing spell heals all defense and buildings in the area.

Rage Spell: The rage spell rages defense units and Clan Castle troops in the area

Jump spell: I got nothing for this.

The freeze spell: The Freeze spell freezes all units In its radius. The spell Launcher would look like an airdefense.