codie mtg commander deck Im looking for cards to create the most chaotic ever : r/EDH Codie, Vociferous Codex | High

You will not continue to exile and shuffle your library forever

If multiple removal-heavy decks like Jund, Mardu Pyromancer, and Jeskai Control find homes in this brave new Modern world, I could see this cards stock going up considerably

and how long they would take to do it

Efficiency can be determined simply by the reward you receive at certain mana costs (Counterspell and Cancel do the same thing, but Counterspell costs less), the total payoff you receive from a single card (Hull Breach and Decimate are both good cards, but Decimate usually covers much more ground), or the payoff you receive in conjunction with other cards (Anointed Procession makes other token production cards completely absurd if unchecked, which is usually better than adding one more card that simply makes tokens like Spectral Procession in a token strategy)