You summon forth the spirit of a beast that takes the physical form of your choosing in unoccupied spaces you can see. 

Choose one of the following:

You summon a creature from the realms celestial.

You summon a creature from the Elemental Planes. This creature uses the statistics of a conjured elemental creature (detailed below) with certain traits determined by your choice of its type: air, earth, fire, or water.

The creature is friendly to you and your companions and takes its turn immediately after yours. It obeys your verbal commands. Without such commands, the creature only defends itself.

You summon a creature from the Dreaming. This creature uses the statistics of a fey creature (detailed below) with certain traits determined by your choice of its type: hag, hound, or redcap. 

The creature is friendly to you and your companions and takes its turn immediately after yours. It obeys your verbal commands. Without such commands, the creature only defends itself.

You summon up to 3 creatures from the Elemental Planes. These creatures use the statistics of a minor elemental (detailed below) with certain traits determined by your choice of its type: air, earth, fire, or water.

You summon up to 3 creatures from the Dreaming.

A corpse explodes in a poisonous cloud.

You attempt to interrupt a creature in the process of casting a spell. If the creature is casting a spell of 2nd-level or lower, its spell fails and has no effect.

Magical darkness

Magical light fills the area.