Oracle final revelations

[GunStarX]

Started an oracle angel play for my second run, currently level 6 with nature and battle mysteries. Trying to decide if it's worth going full 20 levels or if a 1 level dip into monk for the cha ac boost is worth more. Figure if I take the dip after merging angel spellbook it won't feel like a dip.

For the battle mystery I would give up pounce at level 20. Pounce is a very nice feature, but it's so late in the game I'm not sure if it will really matter much. I just played a bloodrager primalist that had pounce for half the game. For nature mystery I don't really understand the full context of this ability other than it acts like a full heal/partial restoration once per day. Is there something else that it does?

Nature:
Final Revelation: At 20th level, you have discovered the intrinsic secrets of life itself, granting you incredible control over your own body. Once per day, you can change your type to plant, animal, or humanoid, gaining superficial physical characteristics as appropriate, as a full-round action. This change does not alter your Hit Dice, hit points, saving throws, skill points, class skills, or proficiencies. Each time the transformation is made, you are cleansed of all poisons or diseases, are restored to full hit points, and heal all ability damage. You must select a new type every time the transfomation is made.