This deck is an attempt to dethrone what appear to be the current kings of Standard Pauper: W or Boros Heroic & Izzet or Boros tokens. Good source of Standard Pauper metagame data here .
For the heroics, that use evasive/pump able threats, I've incorporated as much cheap reach/flying as possible. The plan here is to play a longer game of attrition, with early trades and larger/later creatures out-classing the competition. Sideboard options are tempo/bounce effects to buy time and shred heroics.
Against the token/control strategies, count on early beaters, and un-bestowed threats to stop the competition before they get out of hand. Counterspells or bounce again provide the main sideboard tools.
It's Pauper, so the challenge is to use only commons.
Ramp
Elvish Mystic
Can't beat it.
Threats
Leafcrown Dryad
Blocks early flyers. T2 play after ETB tapped land. Bestow curves in after 3 CMC drops for virtual card advantage.
Nessian Courser
Solid beater for 3. Eats minotaur tokens. Curves on T2 after Mystic.
Netcaster Spider
Eats those annoying heroic flyers for breakfast, and can even hold off a minotaur token. Curves on T2 after Mystic.
Nimbus Naiad
Evasive threat that curves on T2 after Mystic. Bestow curves in after 4 CMC beater, or after ETB tapped land followed by 2nd 3 CMC creature.
Nylea's Disciple
Solid beater with ETB lifegain, curves into a Naiad bestow. Bounce and recast if necessary.
Nessian Asp
Big. Reach. Gets bigger.
Card Advantage
Omenspeaker
Holds off ground aggro with ETB card selection. Bouncable and/or a Bestow target.
Font of Fortunes & Divination
Game 1, I mainly aim to win a game of battlefield attrition. Whether from an aggressive or defensive stance, card draw fortifies this strategy. Game 2, these can be swapped out for more relevant advantage engines.