The idea here is to cast many noncreature spells, deal damage to your opponent spellslinger-style, and use this extra power from Vivi to add more mana
Early game, you get to cast it and give ElshaElsha double strike, triggering prowess and giving your four Monks, even if it's the only spell you cast that turn
Nimbus Maze takes the conventional mysteries of a maze, ascending them even further, both literally and figuratively, making it one of the few Magic: The Gathering cards to combine fantasy with something found in the real world
The standout strength here is mana-to-value conversion
We can do far better at this mana value than this artifact creature
Here is a brief list of qualifiers: OC (Off-center), ST (stain), PD (Print Defect), OF (Out of Focus), MC (Miscut), and MK (Marks)