The giant is feeling a little dicky with his tummy, and isn't quite up to dealing with a mean looking sob pounding their fist into their other hand, looking for a fight.
"Umm, I'll just get it back of you lat-ARGH!" says the giant at another explosion, "you know, when you - ARGH! - finishedNNNGH!"
The party nod happily and rush forward, unfortunately the delay in time has let the Dragon spot them in the fiery confusion.
"HAH! NOT EVEN FIRE PLATE CAN STOP MY FIERY WRATH, FOOLS!" bellows the dragon, frying the fireshield right off the confident fighter in a heartbeat.
Oh bum!
"Whibble his whaaaaaaaaarble wheeeeeeeee!" says a voice across the way - it is the captured Lord Chaos. He seems to be all groggy and disoriented, but obviously has an idea.
I could be wrong, but I reckon you need to do something really sneaky to distract the dragon to find out what Lord Chaos's idea is. I could be wrong but I reckon you need - A NINJA! Or at least some ninja-thinking
Go and do the two coins trick again. Then put a video of it on youtube so people can tape their reactions to it. While we're waiting for the reaction videos, compare the score to the ninja slot value.
If it is greater, then uh-oh. Your party try the old 'look over there' trick, which works perfectly and the dragon does indeed look 'over there'. Unfortunately, the 'over there' is the 'over there' where Chaos is, and where the party is walking. The party walk across the dragon's view, and the dragon contemplates the idiocy for a good few seconds before leaping forward and having fireplate champion casserole with other champion desert.
Go back to 1 and try a little harder next time!