If I had a chance too choose I'd say control time and space to read and study endlessly and without break cause I'd have 100% of my brains capacity unlocked.. and then the regular stuff like telekinesis, teleportation, invisibility, unlimited but controllable strength, split parts of my body off/create new ones and make those invisible while im still visible, pyrokinesis (and the rest of the elements blabla), not needing sleep, and most important of all: being able to regulate which powers are 'active' so that i can live a regular life if i want to and can have a somewhat normal life from time to time to still make friends since i wouldnt want to spy on them etc
