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On top of this it is converted mana cost you need to match rather than toughness which for creatures is typically lower

You can target 1 monster equipped to this card and 1 monster your opponent controls that has less ATK than this card, or is face-down

Number F0: Utopic Draco Future has a powerful protection effect , as it cannot be destroyed by battle or card effects, making it difficult for the opponent to remove from the board

Moreover, it is archival-safe and contains acid-free polypropylene

The card quality and tutor effects are simply much more mana efficient so unless the combo deck has alternate uses for the specific draw spell such as a discard outlet or recursion effect it will avoid the latter in preference for the former