My first honorable mention goes to a replacement combo piece for Deadeye Navigator
it produces a ton of token fodder and can reset creatures with undying and persist
Yusri, Fortune's Flame and Squee's Revenge provide even more card-draw options for those with a few coins in their pockets, and never forget the potency of Rhystic Study in any deck that even splashes blue
Unlike a certain commander who gives opponents card advantage when trying to hurt them, Sheoldred, The Apocalypse only focuses on making drawing cards continuously damaging for them and great for you the added deathtouch makes your enemies think twice about blocking damage, keeping the game plan simple enough that the card will always be in high demand
However, there are also cards like Chip n Dale, Recovery Rangers
Either of these set you in motion for the win, but preferably hold them up until you have the Treasures you need on the field after being super frugal with them or something like Dockside Extortionist or Brass's Bounty in your hand to get tons of Treasures fast