Every attack you make deals holy damage instead of other types of damage unless you choose otherwise for a specific attack.
Invocation of Sun/Anti-Undead: When you cast a daily cleric spell this battle, roll a d6. If you roll less than or equal to the escalation die, you regain the use of that daily spell after the battle.
If your attack already deals holy damage, it gains the following bonus damage—adventurer tier: +1 damage; champion tier: +2 damage; epic tier: +3 damage.
You gain a +2 bonus to all defenses against attacks by undead.
The invocation also affects your allies' daily spells.