The different Mishra's Factories are commonly known as Spring Edition, Summer Edition, Autumn Edition and Winter Edition
PHYREXIA ALL WILL BE ONE: BLUE Encroaching Mycosynth is a cheaper Mycosynth Lattice for blue decks but with a lower cost comes a catch: its only stuff you control (so no Vandalblast) and it doesnt change mana requirements
On the other hand, if you prefer to keep your items sealed, older Sword & Shield boxes might be better, though theyre getting harder to find these days
Even better, some of them are now powered-up ex cards with massive HP and attack power to play around with
Meeting one is definitely the low point of your life
When you play any 2 dragons, 2 major effects go off, giving you a huge advantage in most situations