Arcane Laboratory | Magic: The Gathering
Formats Arcane Laboratory is Legal in
Official Oracle Text for Arcane Laboratory
—Sign on entry to arcane lab
Official Rulings for Arcane Laboratory
10/4/2004 : If a spell is countered, it still counts as the one spell cast.
10/4/2004 : When it leaves the battlefield, the effect ends and all players are able to cast spells unrestricted again.