Gaze of Adamaro is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Gaze of Adamaro deals damage to target player equal to the number of cards in that player's hand.

Complete guide

Gaze of Adamaro is a powerful red Instant that punishes opponents for hoarding cards in their hand. As an Arcane spell, it carries the unique subtype that allows it to interact with Splice onto Arcane abilities from the Kamigawa block. This card turns a player's greatest resource into a direct liability to their life total.

Counting the Cards

The effect of Gaze of Adamaro is straightforward: it targets a player and deals damage based on their hand size. However, it is important to note that the damage is calculated only when the spell resolves, not when it is cast. If the targeted player casts spells in response to reduce their hand size, the damage dealt will be lower. Conversely, if they draw cards before resolution, the damage increases.

Step-by-Step Resolution

First, you choose a target player and pay the mana cost of {2}{R}{R} to put Gaze of Adamaro on the stack. Both players then have an opportunity to respond with spells or abilities. Once both players pass priority, the spell begins to resolve. At this precise moment, you count the number of cards currently in the target's hand and the spell deals that much damage to them. Finally, the spell is put into your graveyard.

Common Mistakes

A common error is assuming the damage is locked in at the moment of casting; if your opponent discards their hand in response, Gaze of Adamaro will deal zero damage. Additionally, since it targets a player, it cannot be used to target Planeswalkers directly, though the damage may be redirected in older formats under specific rules or simply hit the player to reduce their life total.

When to Play It

The best time to cast Gaze of Adamaro is during an opponent's draw step or at the end of their turn when their hand is fullest. It is particularly effective against control decks that maintain a high card count. Since it is an Instant, you can use it as a finishing move after an opponent has spent their mana but before they have a chance to play the cards they just drew.

Interaction examples

Swapping the Target

Deflecting Swat

If you cast Gaze of Adamaro targeting an opponent, they can cast Deflecting Swat to change the target. If they choose you as the new target, Gaze of Adamaro will check your hand size upon resolution and deal damage to you instead. This is a common risk when playing against decks with free interaction.

Reducing Damage with Removal

Chaos Warp

If you target an opponent who has 5 cards in hand, they might respond by casting Chaos Warp on one of your permanents. Because Chaos Warp is now out of their hand and on the stack, their hand size drops to 4. When Gaze of Adamaro finally resolves, it will only deal 4 damage because the card count is checked at that specific moment.

Guide written with AI from the official text and rulings. Official English text prevails.