Prism Array | Enchantment | | Converge — Prism Array enters the battlefield with a crystal counter on it for each color of mana spent to cast it.
Remove a crystal counter from Prism Array: Tap target creature.
{W}{U}{B}{R}{G}: Scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) | Philip Straub
Akoum Hellkite | Creature | Dragon | Flying
Landfall — Whenever a land enters the battlefield under your control, Akoum Hellkite deals 1 damage to any target. If that land is a Mountain, Akoum Hellkite deals 2 damage instead. | Jaime Jones
Radiant Flames | Sorcery | | Converge — Radiant Flames deals X damage to each creature, where X is the number of colors of mana spent to cast this spell. | Slawomir Maniak
Zada, Hedron Grinder | Legendary Creature | Goblin Ally | Whenever you cast an instant or sorcery spell that targets only Zada, Hedron Grinder, copy that spell for each other creature you control that the spell could target. Each copy targets a different one of those creatures. | Chris Rallis
Angelic Captain | Creature | Angel Ally | Flying
Whenever Angelic Captain attacks, it gets +1/+1 until end of turn for each other attacking Ally. | Volkan Baǵa
Munda, Ambush Leader | Legendary Creature | Kor Ally | Haste
Rally — Whenever Munda, Ambush Leader or another Ally enters the battlefield under your control, you may look at the top four cards of your library. If you do, reveal any number of Ally cards from among them, then put those cards on top of your library in any order and the rest on the bottom in any order. | Johannes Voss
Barrage Tyrant | Creature | Eldrazi | Devoid (This card has no color.)
{2}{R}, Sacrifice another colorless creature: Barrage Tyrant deals damage equal to the sacrificed creature's power to any target. | Chris Rallis
Cinder Glade | Land | Mountain Forest | ({T}: Add {R} or {G}.)
Cinder Glade enters the battlefield tapped unless you control two or more basic lands. | Adam Paquette
Smoldering Marsh | Land | Swamp Mountain | ({T}: Add {B} or {R}.)
Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands. | Adam Paquette