Eldrazi Invasion (Hoard Format)

Hoard format is a solo-player or multiplayer coop game against an autonomous deck. In Hoard format players are allowed three turns to set up their defense. Then the onslaught begins!

On the Hoard's turn cards are revealed from the top of the deck until a nontoken (or nonland) card is revealed. All cards revealed this way are cast and players have the option to respond as normal (counters and such). Creatures in the Hoard deck all have haste and attack each turn!

If the Hoard deck loses life, then it mills that many cards instead. Survivors only win when the Hoard has been milled out!

In the Eldrazi Invasion, all swamp cards are colorless 0/1 Eldrazi Spawn creature tokens that have "Sacrifice this creature: Add {1} to your mana pool." Those tokens and Broodwarden do not attack, instead they chump block to prevent players from harming the hoard!
But the real threat is well the Eldrazi Spawn start to swell in numbers. If their numbers reach 10, 11, or 15 and are allowed to remain that high for a full turn, then Kozilek, Butcher of Truth, Ulamog, the Infinite Gyre, or Emrakul, the Aeons Torn will be summoned. And that can only mean certain death for the players!