Spelljammer
Ward Against Disease
Realm:Healing, Protection
Name:Ward Against Disease
Spell Level:1
Rarity:Common
Range:Touch
Duration:1 hour per rank
Area of Effect:1 target
Components:V,S,M
Casting Time:5
Saving Throw:None
The target gains a bonus of +15 to all saving throws vs disease for the duration of the spell. Effects of the disease that occur within the duration of this spell are halved (if possible) but if the disease is still in effect when the duration ends, the disease will take its full effect.

For example, the target of this spell is bitten by a disease-carrying insect. The effect is that painful splotches will break out all over the target's body causing 1d8 damage per round and lasting 24 hours. If a save is made, the damage and duration are halved. The target makes their saving throw so they suffer 1d4 damage every hour for 12 hours. The Ward Against Disease spell that protects them was cast by a level 5 cleric so it lasts for 5 hours. For the first 5 hours of the disease, the 1d4 damage is further halved to 1d2. For the last 7 hours of the effect, it goes back up to 1d4 per hour.