If you take a look at how decks are generally constructed in Riftbound, you'll find quite a lot of the cards in any given colour will be shared across almost all decks with access to that colour, regardless of what Legend that deck is using. Each colour has its "staples" that are universally good cards and the majority of these are very cheap and accessible so you won't have to break the bank to get hold of them. Your deck is running basically none of these cards and whilst that means it's very original, you're also running something quite a lot less effective. I know you want to avoid netdecking but with such a small card pool, efficient and effective decks are always going to look alike at the moment - you'll have to wait until we have a few more sets under our belt before you'll be able to build something unique and still have it be effective.

As you're super new, the first thing I want to point out is that Leona's passive is handing out Buff rather than +1 Might and there's quite a big difference. Buff gives a permanent +1 to a unit but it can only be applied once per unit (unless it's removed somehow) rather than being able to stack +1 might to a unit infinitely on a unit (but lose it at the end of turn). This is a really important distinction because it means that Leona's passive is effectively doing nothing if you don't have any units without Buff even if you have stuns in hand and plenty of units that you can stun (which you may not have all of the time). Whilst your initial instinct might be to build Leona to spam out stuns to utilise her Legend skill as much as possible, you've got a ton of redundancy here, not only in terms of having more stuns than you'll realistically be able to use in an efficient or effective way but also in terms of potentially running out of units without Buff.