You can copy the powers of any person or entity you encounter. You can use as many powers you want at the same time as long as they don't conflict. You can toggle powers at will, any copied power is disabled by default. Similar powers can be merged together (and separated again) to work as a single entity. Copied powers grow and adapt with continued use.
For parahumans, you get a full copy of their power. For Endbringers, you gain a full copy of their power by touching their core, and a weakened copy equivalent in strength to a Parahuman by seeing them. For Entities, you gain a full copy of all the Entity's powers if you defeat it, by touching their corpse you gain weakened copies of its powers equivalent in strength to a Parahuman, you can gain a weakened copy of any ability it uses by seeing it in action. If your target has Trumped the Trump you will need to beat your target in a fight to copy their power, a friendly spar or chess game counts for the purposes of this power.
You have a secondary power that allows you to sort through your collection of powers efficiently.