If some of the targets, but not all, are illegal as the ability resolves, the illegal targets will be unaffected
For saga purposes, its the second ability thats relevant for Xavier Sal, Infested Captain
Time Spiral The traditional weakness of the draw-seven is that your opponents get the first crack at seven fresh cards with all their mana, while you invested some amount of your mana into Timetwister or whatever
Outer Sleeves also affect the shuffling feel because they increase the overall card size, and others might find it uncomfortable since its harder to grip the deck
Even decks that focus on big beat-stick monsters like Blue Eyes White Dragon will run enough level 4s to make rank 4 XYZ monsters
Sorcery Color tag templates(None) Sorcery (CTRL to add secondary) Darksteel Ingot Indestructible (Effects that say "destroy" don't destroy this artifact.) : Add one mana of any color