Zendikar Rising

Kargan Intimidator | Creature | Human Warrior | Cowards can't block Warriors. {1}: Choose one that hasn't been chosen this turn — • Kargan Intimidator gets +1/+1 until end of turn. • Target creature becomes a Coward until end of turn. • Target Warrior gains trample until end of turn. | Kieran Yanner

Roiling Vortex | Enchantment | | At the beginning of each player's upkeep, Roiling Vortex deals 1 damage to them. Whenever a player casts a spell, if no mana was spent to cast that spell, Roiling Vortex deals 5 damage to that player. {R}: Your opponents can't gain life this turn. | Campbell White

Magmatic Channeler | Creature | Human Wizard | As long as there are four or more instant and/or sorcery cards in your graveyard, Magmatic Channeler gets +3/+1. {T}, Discard a card: Exile the top two cards of your library, then choose one of them. You may play that card this turn. | Bryan Sola

Nahiri's Lithoforming | Sorcery | | Sacrifice X lands. For each land sacrificed this way, draw a card. You may play X additional lands this turn. Lands you control enter the battlefield tapped this turn. | Campbell White

Kaza, Roil Chaser | Legendary Creature | Human Wizard | Flying, haste {T}: The next instant or sorcery spell you cast this turn costs {X} less to cast, where X is the number of Wizards you control as this ability resolves. | Ekaterina Burmak