Seat of the Synod [Planechase] HGSS18 and "Whenever this creature deals

and "Whenever this creature deals combat damage to a player

Put any number of them on the bottom of that library in any order and the rest on top of the library in any order

Set: Time Spiral Type: Enchantment — Aura Rarity: Uncommon Cost: {2}{B} Enchant creature

Set: Black & White: Plasma Storm Type: Grass Rarity: Uncommon Retreat cost: Colorless

It may have been a mistake to give them minds of their own

Seat of the Synod [Planechase] HGSS18 and "Whenever this creature dealsSet: Planechase Type: Artifact Land Rarity: Common (Seat of the Synod isn't a spell.) {T}: Add {U}. Lumengrid, site of the Knowledge Pool, source of vedalken arcana.