This deck DOES want to set the world on fire! And thanks to some broken, unforseen card interactions only accessible in eternal formats where one can dig through the depths of time, we have all the mana in the world to do it.
Introducing our star of the night, mr. Pili-Pala!
He's skinny, he's metal, and he's got no brain, because he's a scarecrow! Yay!
He may not look like a whole lot, and if you think that, you'd be right. By himself he's an unimpressive 1/1 flier for 2. But, with our second guest, he becomes something truly inspiring:
The man of the hour, [[Grand Architect]! This guy lets us turn artifact creatures into blue ones, and then gives them a buff. All for the low low price of 1UU! But that's not all! Once they're blue, they can tap for 2 colorless mana with the caveat being that it can only be spent on artifact spells or abilities. Something look funny here? That's the exact amount of mana we need to pay to UNTAP the Pili-Pala to net 1 mana of any color.
Since these are all mana abilities and don't use the stack, we can repeat this process Ad Infinitum in order to do, well, whatever we want! The rest of the deck is built around making the combo gassy with stuff to pump into it. So, all total, 15-16 slots will be devoted to "the combo": 8 for each creature piece, and then 7-8 huge X spells and/or other types of wincon. Since this is sort of a fun deck, I like to use Demonfire and Colossus of Akros.
Everything else in the deck is designed to get us to the combo. Draw spells/tutors to search for our pieces. Control/burn cards remove threats and keep us alive long enough to draw into the pieces.