If a card your opponent owns and possesses is banished face-down while you control this card (except during the Damage Step): You can banish cards from the top of your opponent's Deck, face-down, equal to their face-down banished cards
The answer is that even numbers feel more structured and odd numbers feel more natural
The short answer is, use what you want
Some spells have optional additional costs of collecting evidence
50 SLEEVES INCLUDED: Each pack contains 50 sleeves, ideal for small decks, expansions, or board games that use numerous mini-format cards
Doorkeeper Thrull prevents the enter the battlefield trigger of all artifacts and creatures from happening, making it a particularly good way to shut down many strategies in Magic