In a dupe event, the user is shown cards from their deck, and may obtain an extra copy of 1 of those cards.
Seeks can be any of the following:
"dupe": {
"example": {
"micon": "dupe.webp",
"image": "dupe.webp",
"mdesc": "Dupe 1 card from your maindeck",
"title": "Duplicate 1 card from your maindeck!",
"shows": 10,
"removeRedundant": true,
"seeks": ["main", "side", "extra", "pool"]
}
}