Boros is best known for being extremely aggressive since red and white are, among other things, known for cheap creatures
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
The search for answers promises fascinating revelations
In the meantime though, I thought it would be fun to dig into using Morophon as a commander for various tribal decks
At the moment, Snorlaxs Gormandise does this better (seven cards) but guess whos leaving standard in February, so this card may get a revival