Astral Entity (5e Spell)
From D&D Wiki
|Casting time:||1 action|
|Duration:||Concentration, up to 1 minute|
You close your eyes and focus on the Astral Energy around you as your form slowly starts to dissipate in blue flashes until you completely leave the material plane. You turn invisible and cannot be damaged, you remain in this state until you choose to take an action to dispel it or the spell ends. You cannot attack while in this form additionally only creatures with truesight can locate your position they can still not damage you however.