Gaze of Adamaro

The premise is sound: punish a player for sitting on a full grip, and turn their own card advantage into a clock. The problem is that the effect points at the wrong number at the wrong time. A control player holding seven cards in the early game is exactly who this wants to hit, and against that hand the spell deals a real seven damage, but the fat grip and the open window rarely line up. Four mana at instant speed asks you to find the precise moment their hand is bloated and your tempo can afford the detour, and the worst case is built in: fire it at an empty hand and you have paid four mana to deal zero. That makes it a burn spell that improves as the opponent improves their position, an awkward axis for damage. It belongs to the small family of Kamigawa-era Arcane instants that scale off the opponent's hand size rather than a fixed value, a hook that feeds the splice-onto-Arcane subtheme but never found a deck willing to weaponize the unreliability. Instant speed is the saving grace, and it points at a specific window: their draw step, after they have drawn for the turn but before they have spent anything to their main phase, when the count sits at its highest. That this is the strongest line available tells you how narrow the card's good days are.