When you gain this card, immediately gain 1 Boon Condition.
Then discard this card.
Rulings, clarifications, and reminders
If you have a Blessed Condition, then gaining a Boon Condition will never give you a second Blessed Condition required to flip the card. 
- When an investigator gains a Condition with a specified trait, he searches the Condition deck for a Condition that has the specified trait that he does not already have. If he has a Blessed Condition and is looking for a Boon Condition, he would not be able to flip his Blessed. He would continue to search for a Boon he does not already have. — Nikki Valens