Proper Burial

Orzhov Syndicate Spell
Target dead creature within range that died within the last 3 Days cannot be revived or have necromancy cast on them by anyone other than the caster of this spell. The caster gains life equal to that creatures max HP at the time of casting.
Spells like Remove Curse and Dispel Magic can remove this effect, but you can upcast it for the purpose of making it harder to dispel.

Effect Duration

Until Dispelled or Creature is Revived

Effect Casting Time

1 Minute (Ritual)

Range

30 ft

Level

5th