The Blackstaff of Waterdeep Combos
Isochron Scepter + The Blackstaff of Waterdeep + Vitalize
Voltaic Construct + The Blackstaff of Waterdeep + Thran Dynamo
Voltaic Construct + The Blackstaff of Waterdeep + Pyramid of the Pantheon
Voltaic Construct + The Blackstaff of Waterdeep + Nyx Lotus
Combo result
Infinite mana among colors with which you have devotion. Infinite untap of artifact creatures you control.
Prerequisites
All permanents on the battlefield. Nyx Lotus does not have summoning sickness. You have at least three devotion to any color. available if you have at least three devotion to blue, or {U} available otherwise.