As many players could be travelling in the days prior to that tournament they may not have an opportunity to purchase the new product and are put at a disadvantage to local Duelists who can easily obtain said product
The end result is a more tempo-oriented deck that can play the control seat by utilizing recycled characters, but also close out games quicker than pure control
Tifa Lockhart is one of a couple of good candidates for the Buster Sword, and you can have her on the board pretty early in the game too
Four mana for a haste anthem is already decent - but add cost reduction and threat duplication
Go-Shintai of Ancient Wars has a lot going on as an enchantment, creature, and legendary, and yet is only one subtype that cares about having other shrines
Garruk Wildspeaker Certainly everyone knows this dude is good but I think he is generally considered fair and unexciting and is not played in favour of more exotic planeswalkers a lot as a result