Yes, your opponent had to spend a card and mana to do that, but if a card was printed that said "if this card is in your opening hand, you can reveal it Leyline style to force your opponent to mulligan after he/she is done resolving mulligans," it would see some play simply because of the free wins
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Group submission is a good way to mitigate subscription and pricing fees
This attack also does 10 damage to each Benched Pokmon (both yours and your opponents)
Iron Valiant exs single Attack is the 200 damage Laser Blade, which costs two Psychic and one Colorless energy this also has a downside, in that Iron Valiant ex cant attack on the following turn
Her petulant expression dominates the frame, with Captain Hook's ship full of pirates looking like a bathtub toy in the water at her feet