Why did Chen hold a Tournament of Elements at all when he could have just stolen the elements from the Elemental Masters right away? (I mean, I guess the quick explanation is "he's crazy," but still.-ShinyShiny9
He held a Tournament of Elements so he could single out all of the elemental masters & pick them off one at a time. If he had tried to do it all at once, the masters would have fought back & he might not have got all the powers. He also needed Skylar to absorb as many powers as possible. In a tournament, if she did well, she could touch every elemental master. Chen needed a way to get all of the masters there, so he hosted a tournament. If he didn't do the tournament, the masters may have become suspicious. Chen also likes drama, as Garmadon said, so a tournament would be just the sort of thing Chen would enjoy.
Hahah, pretty good, eh? :) Tell me more plot holes!