Azlask brings back the Experience Counter, a surprisingly powerful mechanic introduced in Commander 2015
Might I also suggest Exploration effects and then card draw and Crucible of Worlds with the fetches
As long as you are not cracking too many Clues and leave yourself two or more, you have a great colored mana source from this Doctor Who card
It might seem risky, but when you can control how many cards you draw and when you stop, you can draw more cards than youll likely ever need with very little risk
This includes stores in regions that normally don't have access to Secret Lair products
Yawgmoth, Thran Physician targets your stuff, Glistening Oil becomes very interesting when you make its downside upside, and Sinister Gnarlbark and other blight cards tie things together from there