
Gideon, Ally of Zendikar | Legendary Planeswalker | Gideon | +1: Until end of turn, Gideon, Ally of Zendikar becomes a 5/5 Human Soldier Ally creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn.
0: Create a 2/2 white Knight Ally creature token.
−4: You get an emblem with "Creatures you control get +1/+1." | Eric Deschamps

Quarantine Field | Enchantment | | Quarantine Field enters the battlefield with X isolation counters on it.
When Quarantine Field enters the battlefield, for each isolation counter on it, exile up to one target nonland permanent an opponent controls until Quarantine Field leaves the battlefield. | Daarken

Part the Waterveil | Sorcery | | Take an extra turn after this one. Exile Part the Waterveil.
Awaken 6—{6}{U}{U}{U} (If you cast this spell for {6}{U}{U}{U}, also put six +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.) | Titus Lunter

Drana, Liberator of Malakir | Legendary Creature | Vampire Ally | Flying, first strike
Whenever Drana, Liberator of Malakir deals combat damage to a player, put a +1/+1 counter on each attacking creature you control. | Mike Bierek

Ob Nixilis Reignited | Legendary Planeswalker | Nixilis | +1: You draw a card and you lose 1 life.
−3: Destroy target creature.
−8: Target opponent gets an emblem with "Whenever a player draws a card, you lose 2 life." | Chris Rahn

Akoum Firebird | Creature | Phoenix | Flying, haste
Akoum Firebird attacks each combat if able.
Landfall — Whenever a land enters the battlefield under your control, you may pay {4}{R}{R}. If you do, return Akoum Firebird from your graveyard to the battlefield. | Chris Rahn

Dragonmaster Outcast | Creature | Human Shaman | At the beginning of your upkeep, if you control six or more lands, create a 5/5 red Dragon creature token with flying. | Raymond Swanland

Greenwarden of Murasa | Creature | Elemental | When Greenwarden of Murasa enters the battlefield, you may return target card from your graveyard to your hand.
When Greenwarden of Murasa dies, you may exile it. If you do, return target card from your graveyard to your hand. | Eric Deschamps

Undergrowth Champion | Creature | Elemental | If damage would be dealt to Undergrowth Champion while it has a +1/+1 counter on it, prevent that damage and remove a +1/+1 counter from Undergrowth Champion.
Landfall — Whenever a land enters the battlefield under your control, put a +1/+1 counter on Undergrowth Champion. | Tyler Jacobson

Kiora, Master of the Depths | Legendary Planeswalker | Kiora | +1: Untap up to one target creature and up to one target land.
−2: Reveal the top four cards of your library. You may put a creature card and/or a land card from among them into your hand. Put the rest into your graveyard.
−8: You get an emblem with "Whenever a creature enters the battlefield under your control, you may have it fight target creature." Then create three 8/8 blue Octopus creature tokens. | Jason Chan

Omnath, Locus of Rage | Legendary Creature | Elemental | Landfall — Whenever a land enters the battlefield under your control, create a 5/5 red and green Elemental creature token.
Whenever Omnath, Locus of Rage or another Elemental you control dies, Omnath deals 3 damage to any target. | Brad Rigney

Oblivion Sower | Creature | Eldrazi | When you cast this spell, target opponent exiles the top four cards of their library, then you may put any number of land cards that player owns from exile onto the battlefield under your control. | Jaime Jones

Ulamog, the Ceaseless Hunger | Legendary Creature | Eldrazi | When you cast this spell, exile two target permanents.
Indestructible
Whenever Ulamog, the Ceaseless Hunger attacks, defending player exiles the top twenty cards of their library. | Michael Komarck

Void Winnower | Creature | Eldrazi | Your opponents can't cast spells with even mana values. (Zero is even.)
Your opponents can't block with creatures with even mana values. | Chase Stone

Sire of Stagnation | Creature | Eldrazi | Devoid (This card has no color.)
Whenever a land enters the battlefield under an opponent's control, that player exiles the top two cards of their library and you draw two cards. | Tyler Jacobson