This process is commonly known as upgrading the precon deck, a step that may be deemed necessary in case you wish to make your set of cards more competitive and have the upper hand in matches
Pauper has a variety of directions that it can grow in, and any one of these could help guide us to a sweet spot
Here is the list of budge creatures with green card draw abilities attached to them: Elvish Visionary When Elvish Visionary enters the battlefield, draw a card Garruks Packleader Whenever another creature with power 3 or greater enters the battlefield under your control, you may draw a card Llanowar Visionary When Llanowar Visionary enters the battlefield, draw a card Tap: Add 1 green Soul of the Harvest Trample Whenever another nontoken creature enters the battlefield under your control, you may draw a card Wall of Blossoms Defender When Wall of Blossoms enters the battlefield, draw a card Bonus Green Card Draw: A Garruk Planeswalker
For a single Blue, you can counter an instant, sorcery or enchantment
The ceiling of attacking with an army of Inferno Titans or a horde of Blossoming Bogbeasts is worth building around