I have a long standing love affair with "Words of Friendship". It gives a +5 to diplomacy checks and it didn't work in combat till I was lvl 5/6 becoming a bit of a joke within our party, after this point the vast majority of the time I used this power to do something outlandish and frankly ridiculous. The best part? I think I rolled a nat 20 around six times leading to encounters and even a boss fight where the enemy broke down into tears and either became an ally or straight up killed themselves because they were so upset with what they'd done. So now no one laughs when I pull out Words of friendship, because Friendship is the most powerful force in the universe *Anime sparkles n' Rainbows n' shit* .