Gentle Repose 2nd level necromancy (ritual)

Casting Time: 1 action

Range: Touch

Components: V, S, M (a pinch of salt and one copper piece placed on each of the corpse's eyes, which must remain there for the duration)

Duration: 10 days

Tags: cleric wizard level2 necromancy

You touch a corpse or other remains. For the duration, the target is protected from decay and can’t become undead.

The spell also effectively extends the time limit on raising the target from the dead, since days spent under the influence of this spell don’t count against the time limit of spells such as raise dead.

You can find more information on this spell in: PHB.245