The subgrades tell me information about the centering, corners, edges, and surface
There are plenty of builds that will enjoy using this card, though Im not sure what youre sacrificing to bring back Wurmcoil Engine or Thopter Assembly
The Dredge mechanic allows you to return a card with the Dredge keyword from your graveyard to your hand as a replacement effect any time you could draw a card
At a certain point this is just the deck with the biggest creatures and the best mana sinks, so if youre able to find enough removal to stop your opponents best punches youre probably going to out scale them in the long game
Heres a few examples: Akoum loves enchantments The Hippodrome shuts down going wide strategies like token creatures
But if you have 1/1 creatures available, you can pay 1 to equip Skullclamp and achieve the same result as if that creature were sacrificed