You can also include Rhystic Study in that list too
Griselbrand is banned in Commander and isn't legal in Pioneer
The set mechanics tie character abilities to their established power sets Captain America rewards defensive play and team buffing, while characters like Quicksilver translate speed into untap mechanics
For Hearthhull, I think it comes down to the fact that this deck is dumping tons of lands into the graveyard and it most likely wins the game by bringing them all back in one go - using a card like Splendid Reclamation - for a mass of triggers
But, I try not to assume too much nor presume to have a firm grip on the cosmos, the world, the current American political regime, or opening seven draw probabilities
The Riveteers Always finish the job Reliant on brute force to get the work done, the unmatched craftsmanship skills of the Riveteers make them masters of intimidation and destruction