All but Corrosion have been played against me.
Notice how, among 2-color decks, Azorius and Boros are the most popular (around 7,200 games each), and Izzet is third with about 6,200
A lot is riding on how good next years crop of fixing is
The fact that its ability to ramp is also repeatable is also very solid, especially if you can find a way to give it double strike so it hits twice per attack instead of once
You only need a couple of other artifacts for this to be a 9/9 or an 11/11 for just 5 mana
As with Mystery Booster , they will be printed as they appeared (including art, frame, and expansion symbol) with the exception that they'll have a small Planeswalker symbol in their lower-left corner