***HORDE RULES***
- Any choice The Horde must make should be made as randomly as possible.
- "Target player" is the active player.
- The Horde has unlimited mana of every colour.
- Activated abilities may only be activated by the Horde once per card.
- All creatures controlled by The Horde have Haste and "This creature must attack each turn if able."
- The Horde has no life total. Damage dealt to The Horde causes that many cards from the top of The Horde's library to be put into its graveyard.

Eldrazi Horde Rules

- The Eldrazi Horde deck only has 60 cards.
- The players have a shared life total of 30.

- The players start the game by taking 3 turns in a row to set up their defenses. Play then alternates between the Eldrazi and the players.

- The players win if there are no cards left in the Eldrazi deck and no creatures in play under the Eldrazi’s control. The players lose if their life total is 0 or if any player has to draw a card from an empty library.

- At the beginning of the Eldrazi’s precombat main phase it reveals the top 2 cards of its library per player and casts them without paying their mana costs.

- The Eldrazi Horde has infinite mana and will never activate the mana abilities of permanents it controls. At the end of each of its precombat main phases, the Eldrazi will activate each of its non-mana abilities once if able.

- The players choose all targets for the Eldrazi’s spells and abilities, but the Eldrazi will never target itself or its creatures with harmful effects.

- Creatures the Eldrazi control have Haste and attack each turn if able. Creatures the Eldrazi control with base power or toughness 5 or greater that enter the battlefield tapped. They are “on the horizon” and will attack next turn!

- The Eldrazi will always try to destroy the blocking creature with the greatest power. In the event of two or more creatures with the same power, the players may choose their blocking order.

- If the Eldrazi have an untapped creature available to block it will always block the attacking creature with the highest power it can, regardless of other abilities like Trample.

- If a player controls a Planeswalker, the Eldrazi will attack the Planeswalker instead of the player. However, any damage dealt above the Planeswalker’s loyalty is dealt to another Planeswalker in play, or its controller if no other Planeswalkers are on the battlefield. Players may choose in what order their Planeswalkers take damage.

Specific Rules

The Retreats

 - The 5 Retreat cards are shuffled into the Eldrazi deck at the start of the game. If the Eldrazi reveals a Retreat during its main phase, it exiles it instead of casting it. On subsequent turns the Eldrazi will reveal 1 additional card for each exiled Retreat during their precombat main phase. If a Retreat is put into the Eldrazi’s graveyard any player may immediately cast it without paying its mana cost.

The Expeditions

 - Shuffle the expeditions at the beginning of the game and randomly select one for each player, then play them in the Command Zone (they cannot be targeted or affected by other cards). All revealed Expeditions are available for all players.

 - Whenever a land enters the battlefield under a player’s control, that player may put a Quest counter on ONE of the face up Expeditions. Once an Expedition has 3 Quest counters on it, any player may activate its ability by removing the counters and turning the card face down (instead of sacrificing it).
 - Special Exception: The lands from the Khalni Heart Expedition will NOT put counters on other Expeditions. They will still trigger other Landfall abilities as normal.

Endless One

 - X equals the number of Eldrazi Scions in play. The Scions do not need to be sacrificed.

Deathless Behemoth

 - If Deathless Behemoth is in the Eldrazi’s graveyard at the end of its precombat main phase, it will sacrifice 2 Scion tokens if able and will immediately cast the Behemoth.

Barrage Tyrant

 - Barrage Tyrant will activate its ability at the end of the turn. It will sacrifice the creature that will do the most damage.

Artisan of Kozilek

 - The Artisan will put into play the creature with the highest power in the graveyard.

Hard Mode

 - All Eldrazi have Deathtouch when blocking. Any creature that dies in combat with an Eldrazi creature is exiled, and the Eldrazi Horde puts a 3/2 Eldrazi Horror token into play.

 - If all the retreats have been exiled by the Eldrazi, and there are more cards in the Eldrazi graveyard than the Eldrazi library, they immediately play Inverter of Truth and take a second turn after this one.

Extra-Hard Mode

 - Remove the 4 Scour From Existence and 2 Bane of Bala Ged, and add in the following:

Emrakul, The Aeons Torn

Emrakul, The Promised End

Ulamog, The Infinite Gyre

Ulamog, The Ceaseless Hunger

Kozilek, Butcher of Truth

Kozilek, the Great Distortion