Zendikar Rising

Umara Wizard | Creature | Merfolk Wizard | Whenever you cast an instant, sorcery, or Wizard spell, Umara Wizard gains flying until end of turn. | Jesper Ejsing

Merfolk Falconer | Creature | Merfolk Wizard | Flying Whenever you cast a kicked spell, scry 2. | Brian Valeza

Scion of the Swarm | Creature | Vampire Cleric | Flying Whenever you gain life, put a +1/+1 counter on Scion of the Swarm. | Ekaterina Burmak

Iridescent Hornbeetle | Creature | Insect | At the beginning of your end step, create a 1/1 green Insect creature token for each +1/+1 counter you've put on creatures under your control this turn. | Simon Dominic

Springmantle Cleric | Creature | Elf Cleric | Springmantle Cleric enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it. | Cristi Balanescu