Protectrix reads "Reap: You may fully heal a creature. If you do, that creature cannot be dealt damage for the remainder of the turn."
Can I "fully heal" a creature with no damage on it to protect that creature from damage later in the turn? From the rules:
- If an ability "fully heals" a creature, remove all damage from the creature.
- If an ability includes the phrase “if you do” or “in order to,” the player referenced by the ability must successfully and completely resolve the text that precedes that phrase before they can resolve or perform the text that follows that phrase. In other words, if the first part of the ability is not successfully and completely resolved, that which follows the phrase does not resolve or cannot be performed.
So I think the question is: Do I successfully and completely resolve the "fully heal" ability when I remove 0 damage from an undamaged creature?