Eldrazi Horde.

This deck is meant to serve as a fun way to playtest your decks. You boot up the playtest thing as normal with your deck against this one. The horde consists of 50 total creatures, 35 tokens and 15 nontokens. However, because I don't know how to put tokens into the library, we will be doing this in a unique way. Also, before the game begins, take your starting hand of the Eldrazi horde and put them into the library and shuffled. You have three turns to set up your deck before the horde invasion begins. Once your three turns are up, you pass to the horde. Ulalek will be put on field with 50 counters of any kind, it will represent how much more of the horde you must defeat. Begin the first phase of the horde with a 3/2 Eldrazi horror and a 4/4 Eldrazi angel, they can have haste if you want them to but I like them not having haste. Every member of the horde attacks each combat if they are able to, so be prepared to have blockers up. After that point, for each horde turn flip a coin, if heads, flip a nontoken creature from the top of the library onto the field. If the coin hits tails, bring in a 7/7 or a 10/10 Eldrazi token, your choice of deciding how, along with a 3/2 horror or a 4/4 angel, your choice of deciding how to choose them. Tick down Ulalek's counters for each Eldrazi brought to the field each turn. Your objective is to survive the horde until it is fully vanquished, aka until Ulalek's counters hit 0 and no Eldrazi are left. You can quicken this process by attacking into Ulalek, in which you will remove counters equal to half of the damage you deal per each damage source. Feel free to go about it anyways you want, but this is the method I found to be particularly enjoyable to do. It is by no means the only way to do this so experiment if you feel so inclined! Note: Your deck succeeding in vanquishing the horde is not what you should use as a measure of if it's good or not. It's how well it keeps up and if it played pretty well. Eldrazi titans are not a good metric of viability for your deck, but this is just something fun I like doing.