Sliver Hive [Magic 2015] Planechase Set: Kaladesh Inventions Type: Artifact

Set: Kaladesh Inventions Type: Artifact Creature — Angel Mythic Cost: {7} Flying You can't lose the game and your opponents can't win the game

Set: Commander's Arsenal Type: Legendary Creature — Human Cleric Mythic Cost: {1}{R}{W}{B} Flying Whenever Kaalia of the Vast attacks an opponent

Mishra discovered the mysterious weakstone

Creatures of the chosen color get +1/+1

or enchantment

Sliver Hive [Magic 2015] Planechase Set: Kaladesh Inventions Type: ArtifactSet: Magic 2015 Type: Land Rare Cost: {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a Sliver spell. {5}, {T}: Create a 1 1 colorless Sliver creature token. Activate this ability only if you control a Sliver.