I've updated my plan to include Richard's new Mythic rank, ya'll.
Right now it has Fleet Warrior plugged in for his new Path ability, but I've also got an option shown for making Oathkeeper a Legendary Weapon instead. I think I prefer Fleet Warrior most, but I wouldn't be upset by going with Legendary Weapon instead.
We don't have to use either option if ya'll would prefer something different, and these aren't the only options for Legendary Weapon powers.
[] Richard's Third Mythic Rank
-[] Mythic Feat: Paragon (Mythic)
-[] Mythic Path Ability:
--[] Fleet Warrior (Ex): When making a full attack, you can move up to your speed either before or after your attacks. This movement provokes attacks of opportunity as normal.
--[] Legendary Item (Ex): You gain a legendary item. This item grants a number of abilities equal to your tier (maximum 3).
---[] Oathkeeper's Legendary Powers:
----[] Powerful: An item with this ability has two additional uses of legendary power per day.
----[] Unstoppable Strike: The wielder can expend one use of legendary power when attacking to make the attack against touch AC. If she instead expends two uses of legendary power, the weapon also bypasses any deflection bonus to AC the target has.
----[] Foe-Biting: When this item deals damage, its user can use mythic power to double the total amount of damage it deals. If the attack is a normal attack, the bearer can expend one use of legendary power to double the total amount of damage. If the attack is a confirmed critical hit, the bearer must instead expend two uses of legendary power to double the total damage. Damage from weapon special abilities (such as flaming) and precision-based damage are also doubled.