Konosuba- True Ex-grow-sion (Patreon)

The second winner of the 'Anime Girls' poll.

This was what inspired Megumin to go down the path she currently goes. This one mage who used 'ex-grow-sion' to make herself ginormous and crush the opposition.
True story.

The only downside is that on a regular mortal, they'd lose all energy, but not this mage. She strong.