The type of collection I have I collect to build I go from having 6 to 15 decks assembled for EDH - this fluctuates a lot as sometimes I will build a deck, play it 5 times, and disassemble it again within a week
Also, cards that get a card from outside of the game (Living Wish, Cunning Wish, Research // Development, etc) are also not allowed
These services are great for players and collectors who enjoy the thrill of not knowing whats inside
First strike helps ensure Alesha survives combat and there are tons of great creatures with 2 power and under worth bringing back
Having Emrakul, the Aeons Torn or any of the other original Eldrazi Titans from Rise of the Eldrazi helps your postboard matchup against the annoying and surprisingly powerful Dimir Mill deck
There are very few situations where this is a dead card