Even if your commander is small think Talrand, Sky Summoner or Emry, Lurker of the Loch you can slot in ways to boost its power to potentially draw you a fair number of cards
Like Imperial Seal or Mishra's Workshop they tend to be utility or ramp
Over three turns, you can hopefully generate one mana, create two Constructs, and tutor a Sol Ring, Shadowspear, or Skullclamp straight onto the board
A card like Cathars' Crusade, while absolutely disgusting (in a bad way) for bookkeeping purposes, really likes Felisa's token production because it means more counters, which might mean, in the future, more tokens
She also has 4 Strength, 5 Willpower and 2 Lore, making her a pretty good all rounder