You have Eidolon's powers without the worthy opponent issue. You can have three somewhat-random powers that you can change at any time you want. These powers can be very powerful. You can switch out quality for quantity and have five weaker powers instead of three stronger ones. All powers take a couple of minutes to build up strength, though they're still usable before reaching full strength. You can still run out of energy with this power. You're a precognitive blindspot to everyone but the entity.
Negentropy increases your slots to five strong or nine weaker powers.