Temporary Immortality

You touch a creature. Powerful magical light expels from your body and swirls around the creature for the duration, temporarily giving them power similar to that of a minor deity.

While this spell is active, the target creature gains immunity to bludgeoning, piercing and slashing damage from nonmagical weapons, immunity to poison damage, being poisoned, and disease. If the target creature was poisoned or diseased when the spell was cast on it, the poison / disease is removed permanently, until they are diseased / poisoned again while this spell isn't active on that creature. They also get resistance to up to three other damage types of your choice when you cast the spell. They also regain a number of hit dice equal to your spell-casting modifier when you cast this spell. The target is also immune to aging and effects that would age them while this spell is active on them.