Hypnotize and Improvize are two actions that replace themselves, while Strike a Good Match, Tinker Bell, Pongo, and Lucky all give you card draw while also allowing you to filter your deck and select the optimum card for each situation
Blacksmith's SkillBlacksmith's Skill is one of the best instant-speed protection spells in the game, let alone Pauper
The Emperor, Hell Tyrant (Yawgmoth, Thran Physician) Yawgmoth, Thran Physician gave one of Magics most iconic villains his first card, and its a beast
4 Tavern Scoundrel Win-Win If You Play Your Cards Right Tavern Scoundrel's not quite as feast-or-famine as some coin-flip cards
Back Bahamut, Warden of Light (As this saga enters and after your draw step, add a lore counter.) I, II - Wings of Light - Put a +1/+1 counter on each other creature you control
Today, I want to share a bunch of different options that you can use, why they're useful, and ones that are fairly affordable