poison deck mtg commander Fynn, The Fangbearer INFECT / EDH Magic Ready-to-Play MTG Commander EDH Deck The

Gavin Verhey specifically stated multiple times in this announcement that a lot of the terms of these tiers fall under feel. It is technically very possible to build an incredibly powerful Commander deck that falls under the deck construction rules of the Exhibition Tier, but these decks are specifically weaker than the average Commander precon according to the second tier

This is a Five Color (the format) essential

Limited formats (Draft and Sealed) completely bypass collection requirements

Sadly, as good as they look, regional exclusivity may rain on players parades somewhat

Perpetual Timepiece

By printing the portrait of the cards characters into a golden doubloon, this showcase immediately gives newer players a hint of what Ixalan might be: a world of treasure, gold, and danger