Summon Elemental

You call forth an Elemental spirit. It manifests in an unoccupied space that you can see within range and uses the Elemental Spirit stat block. When you cast the spell, choose an element: Air, Earth, Fire, or Water. The creature resembles a bipedal form wreathed in the chosen element, which determines certain details in its stat block. The creature disappears when it drops to 0 Hit Points or when the spell ends.

The creature is an ally to you and your allies. In combat, the creature shares your Initiative count, but it takes its turn immediately after yours. It obeys your verbal commands (no action required by you). If you don’t issue any, it takes the Dodge action and uses its movement to avoid danger.

Using a Higher-Level Spell Slot. Use the spell slot’s level for the spell’s level in the stat block.

In addition to the noted usage of the spell's level in the spirit's Traits and Actions, the following attributes are also affected.

Elemental SpiritAC11 + the spell’s levelHP50 + 10 for each spell level above 4Speed40 ft.; Burrow 40 ft. (Earth only); Fly 40 ft. (hover; Air only); Swim 40 ft. (Water only)PBequals your Proficiency Bonus