Conjure Elemental

You conjure a Large, intangible spirit from the Elemental Planes that appears in an unoccupied space within range. Choose the spirit's element, which determines its damage type: air (Lightning), earth (Thunder), fire (Fire), or water (Cold). The spirit lasts for the duration.

Whenever a creature you can see enters the spirit's space or starts its turn within 5 feet of the spirit, you can force that creature to make a Dexterity saving throw if the spirit has no creature Restrained. On a failed save, the target takes 8d8 damage of the spirit's type, and the target has the Restrained condition until the spell ends. At the start of each of its turns, the Restrained target repeats the save. On a failed save, the target takes 4d8 damage of the spirit's type. On a successful save, the target isn't Restrained by the spirit.

Using a Higher-Level Spell Slot. The damage increases by 1d8 for each spell slot level above 5.

You call forth an elemental servant. Choose an area of air, earth, fire, or water that fills a 10-foot cube within range. An elemental of challenge rating 5 or lower appropriate to the area you chose appears in an unoccupied space within 10 feet of it. For example, a fire elemental emerges from a bonfire, and an earth elemental rises up from the ground. The elemental disappears when it drops to 0 hit points or when the spell ends.

The elemental is friendly to you and your companions for the duration. Roll initiative for the elemental, which has its own turns. It obeys any verbal commands that you issue to it (no action required by you). If you don't issue any commands to the elemental, it defends itself from hostile creatures but otherwise takes no actions.

If your concentration is broken, the elemental doesn't disappear. Instead, you lose control of the elemental, it becomes hostile toward you and your companions, and it might attack. An uncontrolled elemental can't be dismissed by you, and it disappears 1 hour after you summoned it.

The DM has the elemental's statistics.

Using a Higher-Level Spell Slot. When you cast this spell using a spell slot of 6th level or higher, the challenge rating increases by 1 for each slot level above 5th.