I think I should clarify some things. Amber is a ruininian similarly to Realms. She is essentially the opposite of Realms in many ways. FOREST SPOILERS: Realms was given increased power by the C.O.R.E. while Amber actually went in and stole the power for herself. While Realms is quite nimble and smart Amber is a powerhouse brute-force advocate. Amber is already one of the 5 most powerful beings without magic and with magic she makes the top 20. Realms also suffers survivors guilt after leaving her friends and family to die in a supernova when they couldn't leave, Amber only intensifies that. In terms of personality Amber is -Stoic -Condescending -Menacing Realms on the other hand is -Smug -Petty -Stays silly Amber mostly provides a physical threat to Realms as Crimson is a much more terrifying threat for her to deal with.
The heart can steal the power