Obviously, X-spells were great mana sinks, but artifacts with healthy activation costs were also big-time favorites, and Mishras Factory was a potent buy-out for those spots where you needed to Mana Drain but had nothing to use it on, plus nothing on top of your deck
Archon of Sun's Grace is a powerful win condition, so its there
While we may get Llanowar Elves, Elvish Archdruid, Dwynen's Elite, and Lathril, Blade of the Elves in Foundations , I don't think those cards can realistically beat a Day of Judgment deck
And White Suns Twilight can give you a ton of tokens while also wiping the board
Put both cards onto the battlefield under your control, then shuffle
The sideboarded games play out very similarly to pre-board