Alright, time to run some games of C and C, and I want some modern in my OSR. Here is spell for the clerics out there.
CHANNEL LIGHT DIVINITY*, Level 1 cleric , 2 druid , 2 illusionist
CT 1 R 30ft. D permanent
SV see below SR yes (h) Comp V, S, DF
When the caster yells a prayer to the heavens, all creatures in the areas are healed for 1d4 hit points of damage. No saving throw is needed when the spell is cast by a cleric or druid. All undead creatures may attempt a wisdom saving throw or take 1d4 hit points damage.
The illusionist version of the spell acts in the same manner with one important exception. The spell recipient of the spell must make an intelligence saving throw. If the creature fails the saving throw, the spell acts normally. If the creature makes the saving throw, the spell fails as the creature realizes that the spell is an illusion. An illusionist cannot cause damage to undead.
The reverse of the spell causes 1d4 hit points damage to living creatures. In those situations, a successful wisdom save indicates half damage if cast by a cleric or druid, or no damage if cast by an illusionist.