AP Blessing Stone

Best Places To Use
7 bosses, for an avg of 49 ap per stone: Unveiling Truth (best bang for your buck!)

5 bosses, for avg of 35 ap per stone: Five Spider Bros

4 bosses, for avg of 28 ap: Prepare for Counterattack, Blood Prince, Proof of Courage

3 bosses, for avg of 21 ap: Source of the Rumor, Final Slingshot

There are a few others with 2, like Nightmare at the Ruins, Another Slingshot

Season 2 runs are avg 7 ap per boss too, so stones are great there.

Note: Red Archer currently only gives avg 7 ap, even though there are four bosses

Tip: Don't use AP/Divine Blessing Stones on dungeons with only one or two bosses.

Getting only 7-14 ap for a valuable stone is not worth.