If you end up with 0 cards left when Bonz has not yet used his tribute to the doomed, you can use Interdimensional Matter Transporter transporter to banish one of your monsters so you can summon vassal.
Once you manage to summon Sphynx, activate its effect to send unnecessary cards to the graveyard, and special summon more fire monsters to your field for your Beast Rising.
Make sure that you don't activate Sphynx's effect to discard your Vassal, Union Attack, and Secret Pass to the Treasures. But if you did, then try to end the duel with your Sphynx, or use Windstorm to switch his monsters to attack position if he has any face up monsters and attack into it.
Do not set 2 spell/trap cards at a time to avoid being locked by his Xing Zhen Hu. But you can use Hazy Glory's effect to clear some space if it happens.
I’m disappointed in duel links with all the recent adds
There are a ton of cardsthese characters uses but aren’t given
Could have made those gate prizes instead of all the stuff we already own from the events