As an action, you have resistance to psychic damage for the duration.
You can target one additional willing creature that you can touch or see within 18 meters for each additional mana or psi expended. The creatures must be within 9 meters of each other when you target them.
You can expend 1 additional mana or psi so you have advantage on Will saving throws.
Mind Blank. You can expend 1 additional mana or psi so the creature is immune to any effect that would sense its emotions or read its thoughts and divination spells. The spell even foils wish spells and spells or effects of similar power used to affect the target’s mind or to gain information about the target.
Immunity. You can expend 2 additional mana or psi so the creature is immune to psychic damage.