Requires

Voltaic Construct must be on the battlefield. The Blackstaff of Waterdeep must be on the battlefield. Gilded Lotus must be on the battlefield. Gilded Lotus does not have summoning sickness. Mana needed:

Steps

1. Activate Gilded Lotus's first ability by tapping it, adding .
2. Activate The Blackstaff of Waterdeep by paying and tapping it, causing Gilded Lotus to become an artifact creature until end of turn.
3. Activate Voltaic Construct by paying , untapping Gilded Lotus.
4. Activate Gilded Lotus's first ability by tapping it, adding three mana of any color.
5. Repeat from step 3.

Results