Yugioh dragunity deck, im looking for strategies and support cards any help would be appreciated?

First off, get rid of one mystletainn and get rid of leyvaten, its really not worth the space. Neither is primus pilus. Throw in 2 mist valley baby roc, it fits really well because of dragon ravine and gea durg. get rid of one phalanx and aklys for 2 dragunity militums, they are really good for synchros. get rid of forbidden lance and terrafroming for 2 mst. get rid of either 1 cards of consanance or 1 dragon mastery for pot of avarice. and either run 2 bottomless/dinesional prison or none at all, they are both to good to only run 1. if you want you could also try and run 1 red eyes darkness metal and 2 red eyes wyvern instead of brandistock and 1 darkspear. hope it helps.