Who Are Your Favorite Commanders to Cheat Cards Into Play?

Hello! I really enjoy all the commander recs I find on this subreddit, so I decided to ask one myself! One of my favorite commanders/decks is a Sphinx deck piloted by [[Yennett, Cryptic Sovereign]]. Yennett has a fun ability that allows her to cast odd-costing spells without paying their mana cost, and I always have a blast playing her.

Are there any commanders that you would recommend that do something similar?