Determination, simply another word for learning. If I consume the knowledge of the world, then I will consume the Power of the world. Knowledge is meant to be Power, it's meant to be shared, and it's meant to be reality. I know this reality, just as I know my mind. You cannot fool me. If you come between me and my companions, then feel the wrath of Reality.

"If you do not know the world than how can you judge it? How can you prepare for it? How can you understand it?  People can only build this world if they understand it's tools" -Wenjek daughter of Scholar Yonjek

Once per long rest you can become "Determined" and gain multiple effects (this feat stacks with other "Will of" feats)
For 6 hours it takes half the time to cast rituals, take notes or write, make trinkets or gadgets, and research any subject (as long as the materials are there for research).
You also can double your Intelligence modifier when you roll any skill that uses Intelligence. If a creature can hear you and makes a roll for a skill check, they can add your proficiency modifier to their roll.
After the 6 hour duration is over you cannot use any Intelligence-based-skills and if you cast any spells using Intelligence then you cannot cast them until you take a long rest.