12 cards that define this Legacy archetype
Emry, Lurker of the Loch
Goblin Engineer
Goblin Welder
Lotus Petal
Mishra's Bauble
Mox Opal
Pinnacle Emissary
Sewer-veillance Cam
Urza's Saga
Volcanic Island
Urza's Bauble
Seat of the Synod