Magus of the Wheel is extremely fun and rather popular over here. It has a lot of unique lines of play available, such as:
- Refilling aggro's empty hand versus a big-grip midrange villain (this is the usual play)
- Serving as card draw source for a draw-light deck (RW and RG can have this issue if they're not careful)
- Enabling reanimator
- Disrupting a TOL tutor during Villain's draw step
- recursive target for a mill win in a board stall
- Turning sideways with an extremely respectable body
It's been a relatively strong pick that sees lots of use, and is probably the best card from the last batch of commander decks imho.
I also really like
Reforge the Soul, but I played it the most in my playgroup and ultimately cut it for something that would see more general adoption. I think it has real potential and I've had a blast with it, but it likely requires another step down in format speed to be really worthwhile.
Wheel of Fate seems too sluggish, and
Wheel of Fortune is cool but I want
Painful Truths or
Oath of Jace far more in any deck WoF might see play in. Magus takes the nod for its extreme flexibility and fair body.