Attune to an elemental plane and open a minor gateway. Choose an element: Acid, Cold, Fire, Lightning, Poison, or Thunder. You create a 20-foot cube centered on a point within range attuned to your chosen element. Any spells and attacks within the zone that matches the attuned element have a +1 to attack and damage rolls, and a +1 to spell save DC.
As a bonus action, the caster may move the center point of the zone to any other location within range.
On your later turns, you can take a bonus action to transmute the damage type of the next spell or cantrip to the chosen element of the zone, as long as the action takes place within the zone or targets an area within the zone. This transmutation only alters the spell for this casting only
Using a Higher-Level Spell Slot. The attack and damage bonus, as well as the spell save DC increases by +1 for every slot level above 2. Furthermore, you can attune to one additional element.