Phasing Arrow

HISSSS!

Fey gasped, her eyebrows twitched, as she learned just how special her causal ability was... 'Even my brother has only one mythical grade ability. It looks like I'm really lucky.' she paused for a moment as this thought passed through her head.

"But I feel that I can only use 'Phasing Punch' twice after I've used it just now," Fey said. 

Fein smiled and said. "All abilities had restrictions. And the stronger the ability, the stronger the limitations. Causal Abilities can defy logic and they are absolute most of the time, but because of this, it has the limitation of the number of use. My mythical ability may not be as powerful as yours, but it's more versatile and useful."

Fey's pupils lit up, and she nodded her head in enlightenment. "So that's how it is..."

Her brother had explained the matter to her, and the more knows, the more she found it reasonable.