I just think the card is well executed it being an artifact plays well with Urzas Saga, Improvise and Springleaf Drum, and unlike Thalia, Guardian of Thraben where youre locked out by the tax, you have the choice with Esper Sentinel which presents interesting in-game decisions as you have to balance the tax on the mana versus providing your opponent with card advantage a similar decision to that of being on the play or on the draw
Urzas Cave is again less relevant in EDH than in Modern, where the land subtype is much more relevant
If you can't block with your wall for fear of it easily being answered and putting you a card down then your wall isn't really doing it's job
Embracing goad isnt just about winning
So, figuring out whats good and whats not in this space is essential
The Boys Themselves Each of the Turtles gets multiple cards depicting their journey from starting as a novice ninja as a common, and ending up as a mythic rare expert martial artists