Chalice of the Void

Chalice of the Void enters the battlefield with X charge counters on it. Whenever a player casts a spell with converted mana cost equal to the number of charge counters on Chalice of the Void, counter that spell.

Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

Cloudpost

Cloudpost enters the battlefield tapped. {T}: Add {1} to your mana pool for each Locus on the battlefield.

Umezawa's Jitte

Whenever equipped creature deals combat damage, put two charge counters on Umezawa's Jitte. Remove a charge counter from Umezawa's Jitte: Choose one — Equipped creature gets +2/+2 until end of turn; or target creature gets -1/-1 until end of turn; or you gain 2 life. Equip {2}

All Is Dust

Each player sacrifices all colored permanents he or she controls.

Ulamog, the Infinite Gyre

When you cast Ulamog, the Infinite Gyre, destroy target permanent. Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.) Ulamog is indestructible. When Ulamog is put into a graveyard from anywhere, its owner shuffles his or her graveyard into his or her library.

Eldrazi Temple

{T}: Add {1} to your mana pool. {T}: Add {2} to your mana pool. Spend this mana only to cast colorless Eldrazi spells or activate abilities of colorless Eldrazi.

Glimmerpost

When Glimmerpost enters the battlefield, you gain 1 life for each Locus on the battlefield. {T}: Add {1} to your mana pool.

Vesuva

As Vesuva comes into play, you may choose a land in play. If you do, Vesuva comes into play tapped as a copy of the chosen land.

Grim Monolith

Grim Monolith does not untap during your untap phase. {4}: Untap Grim Monolith. {T}: Add three colorless mana to your mana pool. Play this ability as a mana source.

Endless One

Oblivion Sower

Ulamog, the Ceaseless Hunger

Eldrazi Mimic

Endbringer

Matter Reshaper

Reality Smasher

Thought-Knot Seer

Wastes

Ancient Tomb

Eye of Ugin