Endless Coffin

An overlooked, but very important issue faced by necromancers is their inability to raise all of the corpses they create. A modern necromancer realizes the benefits of being able to carry around a surplus of fresh materials to fuel their experiments or simply to create more soldiers.

When you cast this spell, you can target up to 6 humanoid corpses, which disappear into coffin-shaped portal. These corpses remain inside the coffin until the spell is cast again, or until new corpses are put inside; if the coffin is full and you attempt to put more corpses in, you choose which corpse to shunt. While inside the coffin, corpses and undead do not decay, but you can designate corpses to strip the flesh from to create skeletons when you pull them back out.

Additionally, you can store undead under your control in this coffin, so long as the CR of the undead is equal to or lower than the slot level used to store them. Time passes for undead within the coffin.

If the material component of this spell is destroyed while there are corpses contained within, they are deposited in the nearest unoccupied space.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the number of corpses you can store and summon increases by 3 for each slot level over 2nd.