Theres no number you can put on testing, but I personally test a deck 40+ times before locking it in
5 Clocknapper This weird card lets you extract a chunk of your opponents turn to use during your turn
To tell if a Magic: The Gathering card is rare, look at the set symbol located on the bottom right of the card: a gold colored symbol indicates a rare card, while black is common, silver is uncommon, and orange is mythic rare
(2023-10-13) An effect may refer to a card, spell, or permanent that "has an Adventure." This refers to a card, spell, or permanent that has an adventurer card's set of alternative characteristics, even if they're not being used and even if that card was never cast as an Adventure
Retrieved September 20, 2017
Or a 4/4 with flying