Power Borrowing

I'm watching God of High School (I'm also up to date with the manhwa), so I search in this wiki for the exact power that reflects the Charyeok (Translated as ''Borrowed Power'').

Funny enough, there's Power Borrowing. So, where's my question...

What higher power would you make a pact with? Perhaps summoning a special weapon? A figure from folklore or legend? A mythical beast? Or even a divine being?

What powers would you get? Before that, as I did in a previous post, here's some powers you cannot ask for...

• Going back in time.

• Fiction-related abilities.

• Any power that allows perfect resurrections (You can still be a Necromancer)

• Any type of immortality, except for Semi-Immortality.

• Omni Powers.

• Conceptual Powers.

• Superpower Manipulation.

• Reality Manipulation.

• Almighty Powers.

• Meta Powers.

• Absolute Powers.

• Infinite Powers.

Besides that, you're good to go. For example, I would make a pact with Phoenix, the mythical fire bird that is reborn after its death. As for my powers (Using pages from this wiki): Peak Human Body, Fire Manipulation and Healing.

However, I'm not immune to fire. My healing can deal with broken bones, failing organs, lost senses, parasites and virtually any kind of poisoning, but the deadlier a condition is, the more time it takes to heal. For example, someone with a broken leg will take five minutes to fully heal or someone born blind will take an entire day. My healing cannot deal with those already dead, diseases or regenerate lost body parts, going back to a previous example, I can heal a broken leg, but not regrow a lost one.