Ignis Scientia helps you get more lands while giving you a way to spend your mana
You lose only 2 life when Cleopatra's last ability resolves regardless of how many counters the legendary creature that died had on it
Tower Winder Tower Winder is excellent if you have it during your first few turns, as you can get a defensive creature and fix your mana by getting your Command Tower, one of the best lands to have in EDH
However, there are a couple of other versions of Bolas with abilities that add loyalty much fasterGod-Pharaoh and the Arisen (the back side of Nicol Bolas, the Ravager) are both +2, while Planeswalker and the Deceiver and both +3
A similar card to consider is Wyleth, Soul of Steel but hes invariably better in the CZ than in the 99 most of the time (and even then, much better when you build around Equipment and Auras)
Hajar can run Bard Class as a secret Commander, and let me tell you if you build around RG legends specifically, this little enchantment can put some serious work in
