A477-Partial
Just off the top of my head, Luck Domain's Bit of Luck power gives a roll-twice-and-take-favorable to any d20 rolled in the next round, no matter how many. Its 6th level power also allows you to reroll any d20. Combined with Headband of Fortune's Favor, it could make for quite devastating number of rerolls.
Edit:
Pugwampi's Grace does the opposite (reroll-and-take-worse) to any d20 roll.
Lucky Number allows you to reroll or +2 if you roll the number determined at the time of casting again within the duration of the spell. Explicitly, it says it's applicable regardless of what type of dice you get the number on, so you can get situations of getting an 8 from a d6.
Borrow Fortune
Ill Omen