You have some really great ideas, although I'm not so much on the luck/hero idea. You want a game that takes skill to win, and adding that big of a luck feature seriously takes away from the skill.

As for the Trample feature, I think that would fit better on Gorons as they can roll around or uncurl to fist fight. You would do more damage as a fighting Goron but would take less damage curled up.

Any one else?

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A firm believer in Christ my Savior.
The Legend of Zelda: Relinquished

--Credit to DSL9 for this Sig--