I used a DUAL card with the name [ShineGreymon] on its Digimon side as an Option card from my hand. Can I then use Arts Digivolve to digivolve this card into the card I used, ignoring digivolution requirements?
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No, you can't. A used Option card is treated as not being in any area until its [Main] effect has been resolved and the card would be trashed. You can’t ignore digivolution requirements because it isn't treated as a card in the hand.
Source: BT21-040 Agumon