Estrid should be able to protect at least one other permanent each turn, while untapping lands enchanted with Fertile Ground or enchanted creatures that have attacked to reclaim some blockers
I never want to yuk anyone's yum, but it feels as though those in deep with the grading game occupy a similar space to resellers (who are arguably ruining the hobby for everyone else just look at how hard it is to buy Pokemon TCG Pitch Black for an example)
The Evolving Skies alternate art collection, with Rayquaza as a centerpiece, is a collecting goal for many.
By doing this, you have the ability to activate quick-play spells from your hand on your opponents turn, and you can then shuffle a number of quick-play spells from your graveyard into the deck to draw that amount of cards
While this first wave of cards feels like a strategy still awaiting the key card to send it into the competitive stratosphere, there is potential in the deck as it currently stands
Damage doublers like Angrath's Marauders or Furnace of Rath or even a damage tripler like City on Fire can increase how much damage your commander deals