The material body that you leave behind doesn’t need food or air and also it doesn’t age. Its really simple: physical spells work on the physical plane, mana spells work on both, the physical and astral plane. While in the Ethereal, you can perceive the Material Plane if you're close enough to it, a region known as the Border Ethereal.

DMG calls it "Psychic Wind," see DMG pg 48 for alternate rules on that. The Astral Plane is a great, endless sphere of clear silvery sky, both above and below. The Astral Plane Inhabitants • Creatures • Deities • Divine realms • Locations • Organizations • Settlements • Roads • Items • Food and drink • Events • Images Is there any way to do a recording of what happens on the astral plane? You do not age while on the Astral, nor need food or water. At most, you'd move to a different part of the Astral Plane: you wouldn't get an opportunity to escape it. It creates a rift in space which destroys both bags and scatters anything that's within 10 feet of the rift across the Astral Plane. The Ethereal Plane is what connects the Prime Material Plane, where all elements are found, to the Elemental Planes, which serve as the sources of those elements. If you are only perceiving and casting a mana spell you can chose which plane to affect, but can … Thanks! Note also Astral Winds can cause confusion lasting 1d6 to 1d10x10 days while being cast adrift. If you enter a new plane or return to the plane you were on when casting this spell, your body and possessions are transported along the silver cord, allowing you to re-enter your body as you enter the new plane. Traveling the Astral Plane can be dangerous. Astral Projection 5e. The Astral Plane has the following traits. Up to 8 willing creatures within range and you project your astral bodies into the Astral Plane. Your astral form can freely travel through the Astral Plane and can pass through portals there leading to any other plane. If you were to place two Bags of Holding inside each other while on the Astral Plane, the portal that opened would then deposit you in "a random location on the Astral Plane." Since you are on the astral plane when projecting, only mana spells work. Both planar travelers and refugees from other planes call the Astral Plane home. Well, you know what I mean by "videotape". If you close the bag, though, the halfling will have about 10 minutes of air before they start suffocating. Occasional bits of solid matter can be found here, but most of the Astral Plane is an endless, open domain. As for putting bags in bags, yes, you can do it, but that is not a good idea. In case you are already on that plane, then the spell fails and the casting is wasted.