Legendary Creature - Merfolk Wizard
This spell costs 1 less to cast for each artifact you control.
When Emry, Lurker of the Loch enters the battlefield, put the top four cards of your library into your graveyard.
T: Choose target artifact card in your graveyard. You may cast that card this turn.
So, now blue has got it's own Goblin Engineer? I say Engineer and not Welder because the artifact isn't for free, so there's a cost limitation, etc. But man, is this cool. Black Lotus every turn?