When you play any 2 dragons, 2 major effects go off, giving you a huge advantage in most situations
What's done is done, just know that putting Mana Crypt in your casual coin-flip deck meaningfully raises the power level of your deck.
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
If you aren't threatening a win the next turn with those kind of resources, then you just aren't building your deck right
It too easily allows for access to a large portion of ones deck, without having to guess how far you need to go, and leaves the mana up for casting the cards drawn right away
The different Mishra's Factories are commonly known as Spring Edition, Summer Edition, Autumn Edition and Winter Edition