Help expanding a deck
I made a casual pendulum deck, but wanted to add a new XYZ monster that's either rank 4 or 7 but didn't know what to choose, also a level 10 Synchro monster which I narrowed down to just 5 being: Ascension Sky Dragon, Bystial Dis Pater, Chaos Angel, Nirvana High Paladin, Swordsoul Supreme Sovereign - Chengying. There are just so many rank 4 and 7 XYZ monsters. A little extra information, although it does use all the dimension dragons and their supreme king variants (exluding starving venom), it does mostly surround around using performapals and odd-eyes monsters, having cards like odd-eyes wizard dragon or phantom dragon or arc pendulum, as well as odd-eyes unicorn, u-go golem and others, the main and only tuner is nobledragon magician so a suggestion for another tuner as well maybe although I was looking at running multiple copies of nobledragon magician. Also the deck already has both rebellion dragon and supreme king dark rebellion and odd-eyes absolute dragon so other XYZ cards would be useful, in terms of summoning requirements, most of the decks level 4 and 7 monsters are dark with a few variations