Read about Sandtrix. Read the letter they got. Read about what constitutes trademark infringement. It is not about exact copies. If they can make a case that the combination of elements can make someone mistake your game as a game of their franchise, they probably will sue at some time.
If your game is at a glance clearly not of their franchise, you should be safe-ish. And it is not helping, that you named that shield skill glitched shield skill. As I said, it is the combination of elements.
Maybe read about other games that have parodied known franchises. How far could they go, and were there troubles.