Spells are effects that can be activated during a game. To cast a spell you need to use the wand during the game after the start of the fight. When a spell is casted a small projectile or ray springs forth from the tip of the wand; it's landing point determines the origin of the effect.
With minions and your chosen cards, spells complete your setup for playing.
They can be acquired from the merchant, from the arcade prize billboard, as a quest reward and from the premium shop.

Spells list:
FIREBALL
HEAL
NOVA
STUN RAY
SUMMON HAUNTED STUFFED BEAR
SUMMON SHAMBLING ZOMBIE