What if...We had ways to trigger main deck thunder dragons, using explosive cards and a lot of resources? That's what I'm Talking About!
The idea is originally to trigger the TD's using Invoked/Evil hero, but the prices aren't that acessible even right now with a reprint.
Then shaddolls came! And it solved everything, along with the monarch S/T engine to thin your deck. Need a boss monster? Odd-eyes advance dragon can burn your opponent removing threats, as well revive shaddolls and thunder dragons.
This is strictly supposed to play second, if you go first, at best you can tribute your opponent's monster to set a shaddoll beast.
Have fun!