Dark Ritual - Black SpellCasting Cost: 6Text: The first card in your hand gains full mana.Rarity: MasterpieceWhy on earth would I cast this spell - which auto-casts, by the way - if my first card in my hand already has full mana? Yes, I realize that I can disable the spell in order to control when it casts, but we're all familiar with the way gem cascades happen and even a card costing 13 or more can fill up to full mana in a single turn, thereby blowing the use of the Dark Ritual.I would expect that, for a Masterpiece card, there would be a little more "intelligence" built in to where it didn't feel more like a rare card. In my opinion, a Masterpiece card would have the clause "that can gain mana" as part of its effects.
Yep, that's been the process that I typically follow. And you left out one step - ensure the first card in your hand has no (or very little) mana stored after you re-enable Dark Ritual. This awkward workaround "works" about half the time. Meaning, the Dark Ritual spell actually casts after I make my gem swap for the turn and gives the first card in my hand full mana.
If Dark Ritual is your last card, then any cards with mana before will cast...