Here is how Princess Yuna absorb enough power to defeat Bowser, his family and Kaos in Princess Yuna of Skylands.
Princess Yuna: All Right, I've only got one shot at this. I'm gonna need a bit of Unicorn, Pegasus and Earth Pony magic and all ten element power from the Skylanders.
Princess Skyla: Golden Apple, Thunder Spectrum and Emerald are ready, Yuna.
Princess Yuna: Spyro, Chop Chop, Whirlwind, Eruptor, Terrafin, Stealth Elf, Trigger Happy, Blackout, Spotlight. Do you trust me?
Spyro: We trust you, Yuna.
Spyro, Chop Chop, Whirlwind, Eruptor, Terrafin, Stealth Elf, Trigger Happy, Blackout, Spotlight, Golden Apple, Thunder Spectrum and Emerald shared their magic and powers with Yuna as she absorbs it with her magic.
Princess Yuna: I'm ready!
The foals watched as Yuna prepare for the final battle with Bowser, his family and Kaos.
Meanwhile, Kaos was ready to use the Lightcore Amulet.
Kaos: Alright, Lightcore Amulet. Work your evil power!
But, the Lightcore Amulet was empty.
Kaos: What? It's Empty? That impossible!
Bowser: But how!?
Mistress 9: Princess Yuna!
Bowser Jr.: I bet she used her magic to absorb that Lightcore Magic, Pop!
Bowser: It's time to take matters into my own claw!