Im not usually one for repeatable tutoring, as I find it a little dull but I cant ignore the power behind Emeritus of Woe
There's the concept of virtual card advantage, which basically equates getting rid of dead cards as effectively the same as drawing cards
More mana helps with the play bit, which is where cards like Bard Class and Relic of Legends come in, with the latter being particularly powerful
This slots into Varina and Wilhelt builds for sure, but it could just be a great commander in its own right
Worst case, Honored Knight-Captain should show up Human Commander decks, where getting two on-tribe bodies for the price of one seems pretty solid, and doubly so if your deck has an equipment sub-theme
It revolves around intentionally discarding cards from your own hand for value