Any Thrasios list wants infinite mana combos but with Eligeth out you'll no longer put all your lands onto the battlefield, so this partner combo feels like a way to make a Thrasios deck that is still strong but probably not quite a cEDH deck
Rogues will continue to get new pieces nearly every set so you know that youll always be able to update, tinker, and adapt this deck to the ever-changing meta
At that point, you have perfect information about what will be (or could be) in your deck and can build it with a streamlined plan for playing out its lands
Drafts pre-game phase involves players opening a Draft Booster and choosing a card from the pack, then passing it to the next player
This is to say that if you have to include a C- card in your deck, youd probably rather have a six-mana 6/6 than a two-mana 2/2
Copying something like Pyrokinesis could also be kind of bonkers