Zendikar Rising

Cascade Seer | Creature | Merfolk Wizard | When Cascade Seer enters the battlefield, scry X, where X is the number of creatures in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) | Brian Valeza

Master of Winds | Creature | Sphinx Wizard | Flying When Master of Winds enters the battlefield, draw two cards, then discard a card. Whenever you cast an instant, sorcery, or Wizard spell, you may have Master of Winds's base power and toughness become 4/1 or 1/4 until end of turn. | Yigit Koroglu

Expedition Diviner | Creature | Merfolk Wizard | Flying As long as you control another Wizard, Expedition Diviner has "When this creature dies, draw a card." | Heonhwa Choe

Charix, the Raging Isle | Legendary Creature | Leviathan Crab | Spells your opponents cast that target Charix, the Raging Isle cost {2} more to cast. {3}: Charix gets +X/-X until end of turn, where X is the number of Islands you control. | Viktor Titov

Sure-Footed Infiltrator | Creature | Merfolk Rogue | Tap another untapped Rogue you control: Sure-Footed Infiltrator can't be blocked this turn. Whenever Sure-Footed Infiltrator deals combat damage to a player, draw a card. | Mathias Kollros

Omnath, Locus of Creation | Legendary Creature | Elemental | When Omnath, Locus of Creation enters the battlefield, draw a card. Landfall — Whenever a land enters the battlefield under your control, you gain 4 life if this is the first time this ability has resolved this turn. If it's the second time, add {R}{G}{W}{U}. If it's the third time, Omnath deals 4 damage to each opponent and each planeswalker you don't control. | Chris Rahn