Boros Double Strike Pioneer/Historic Double strike is one of the strongest abilities in the game, and it is strong even in its decks budget form
It also supports artifact creatures in general, which is helpful since it lets you flesh out the deck easier, but really he's there to make Phyrexian decks function
I also want to point out something important: this spell is an instant , as opposed to most red damage based wipes
This works like Thief of Sanity, except it trades flexibility for a mana advantage
These are nothing groundbreaking, and are typically very short, given the limited space
Given the remarkable levels of hype for Magics latest and greatest core set, this has been a long time coming