which booster box to buy mtg Collector Boxes: List of All 11 of Them and contain at least one shiny foil card. Theros Booster Pack

This is probably intended to stop some kind of infinite loop, but its also a hilarious way to snuff out some synergy with last years Assassins Creed set

If you play a Song action, then you may exert a Character with a cost equal to or higher than the Song to play it for free

Vivi also combos with Quicksilver Elemental to create infinite mana and can even win the game if you have a way to cast infinite spells to ping down opponents

Since there are a lot of different pieces that need to get into play at once and we want the combo to come out of nowhere, it makes the most sense to me to go another direction with this deck: Green for Collected Company

Black and green got access to a Path-style effect with Assassin's Trophy, which has some worthwhile trade-offs