You want a recommendation of what type of power that I'd recommend otherwise? (Say that four times fast) I'd recommend speed based abilities (like shoes or whatever be it that allow you to move faster and allow you to kick harder or whatever be it) that allow you to blitz and enemy or something you can spam or just go for outright crippling blows. Like the Jackpot Knuckles, an ability in the anime that let's the user punch something and get the best result from doing so like breaking the hilt of a sword but diminishes the more you use it against a specific enemy..

Hell anything can be useful as a fullbringer you can use lamp posts as spears, bounce off rocks like rubber, etc. I don't know you well enough that I can point to an ability and say that it'd match you well. However I can maybe recommend the ability to turn shadows around you by using whatever be it and making them into soldiers to fight for you.