Theyre not only playable right out of the box, they can hang unmodified in most environments
Toxic DelugeToxic Deluge is one of the best black mass removal spells ever made and fits perfectly with this deck - especially if we pay four or more life, we can draw a card from our commander's effect
Since they dont use a colored mana symbol, they can go into any Commander deck to provide an off-color basic land type, which could be interesting for domain or converge strategies outside 5-color shells
This tells me that players are seeking them, but stores arent probably because they are very hard to move
Expressive Iteration is often found in decks like Murktide and Underworld Breach decks to maximize the amount that you can get two cards off of an Iteration cast in the early parts of the game
Mug Whenever Locke attacks, each player mills a card