Start typing a card name and use the auto-complete feature to quickly select the card you're trying to add. Enter a quantity and add that card to your sideboard!
Submit a list of cards below to bulk import them all into your sideboard. Post one card per line using a format like "4x Birds of Paradise" or "1 Blaze", you can even enter just the card name by itself like "Wrath of God" for single cards.
Once upon a time 10+ years ago, I had a R/U deck built around Thought Nibbler, Thought Devourer and madness/flashback cards. It was vaguely competitive and a lot of fun to play in the world of Psychatog and U/G Madness. Since then every time I've tried to come back to Standard, I've looked for bad creatures to play in fun ways. This is my most current idea, though I don't know if I'll actually get to play it.
This deck has been viewed 1,160 times.