Divine Lair

A 45-foot-radius immobile dome of force springs into existence around and above you and remains stationary for the duration. The spell ends if you leave its area.  All other creatures and objects are barred from passing through it. Spells and other magical effects can't extend through the dome or be cast through it. At the start of the spell you can choose one of the following effects;  In your turn you can use your action to use that effect.

• energy erupts from a point on the ground you can see within 60 feet of it, creating a 15-foot-high, 10-foot-radius geyser. Enemy creatures in the energy's area must make a Dexterity saving throw, taking 3d4 radiant damage on a failed save, or half as much damage on a successful one.
• You can heal up to 3 creatures of your choice that you can see within 30ft regain hit points equal to 2d8 + your spellcasting ability modifier. 
• choose an ally you can see within 30ft, that creature gains advantage on the first atack they do.