Researcher of the Weave

Thanks to extensive research on the magic of the Weave and those who wield it, you have heightened your own magical ability. You gain the following benefits:

Ability Score Increase. Increase your Intelligence, Wisdom, or Charisma score by 1, to a maximum of 20.

Mana Reserve. You have a pool of points equal to your proficiency bonus plus your spellcasting modifier. When you cast a leveled spell that you have prepared, you can instead cast it by spending a number points from the pool equal to the level of the slot you would expend for the spell (for example, casting a level 3 spell costs 3 points, and upcasting a level 1 spell to level 5 would cost 5 points). You regain all your points when you finish a Long Rest.