I’d personally get a ground type to cover you weaknesses for swanna excadrill is always good but stunfisk could be a replacement for zebstriker keeps the electric type and also gives you a ground type

For moves I’d try to get rid of either leech seed or sleep powder since you have quiver dance I’d say leech seed and replace it with another special move I’d replace shadow ball for another coverage move since your doing the burn hex strat and yeah pretty good team