To remedy this deck and make it a little easier to play in Pentagram, I'd look at adding more flexible spot removal and more sweepers
The damage starts off as inconsequential, but Thrummingbird usually picks up a +1/+1 counter in these decks, scaling its own damage as it churns out counters for your other permanents
Sneak and ninjutsu usually aim to get creatures onto the battlefield at a cheaper cost
Wakening Sun's Avatar: The Timmy in me, however repressed, is giddy as a schoolgirl
Exxaxl: With Maeve costing 3 mana to activate, cards like Curse of Verbosity that incentivizes your opponents to hit someone else without having to repeatedly sink resources into your commander are a boon
Whenever a creature you control with reach attacks, untap it and it can't be blocked by creatures with greater power this combat