Planeswalkers I wont lean super-hard on planeswalker cards because they tend to draw a lot of heat in a game of Commander, but they work so well with proliferate Ill likely pepper in a handful of them
However, if you want to use this creature as your Orzhov commander or as part of your infect deck, it's an option
For example, if you control ten permanents, lose control of two, then cast Illustrious Wanderglyph, you won't have the city's blessing
Its great for combat and against damage-based sweepers, but its also highly vulnerable to Naturalize effects
Transforming it late is going to feel like a pretty good use of your mana, too
The cost to play them requires some mana of that color and potentially any amount of mana from any other color