card holding binder 3x5 Traditional Style The card binder 9 pocket is made from durable materials Card Guardian - 4 Pocket

If you ignore the speeds and colours of the cards I am not exactly sure what size of library is the size at which Impulse becomes more valuable than Demonic, certainly it is greater than five but by how much it is really hard to say

Speedy Uppercut50 This attack's damage isn't affected by Weakness, Resistance, Pok-Powers, Pok-Bodies, or any other effects on the Defending Pokmon

Do not market raw inventory as 10 candidates simply because it is modern and glossy

But your What if my deck accidentally has a combo or finds a way to chain extra-turn spells

It had very little redundancy, it had useless individual cards and the combo was very slow and vulnerable