Skullpiercer GnatHow it works & interactions with other cards

Corrupting the Hand

Skullpiercer Gnat is a two-mana creature with Flying and Toxic 1. Its most unique feature is its triggered ability: whenever it deals combat damage to a player, a random nonland card in that player's hand perpetually gains a triggered ability. This means that for the rest of the game, no matter where that card goes—whether it is cast, discarded and returned, or even moved to the library and redrawn—it will force its owner to take a poison counter when they eventually cast it.

Step-by-Step Resolution

First, Skullpiercer Gnat must deal combat damage to a player. Once damage is dealt, its triggered ability and the Toxic 1 keyword both trigger. The player receives one poison counter from Toxic 1. Simultaneously, the game identifies all nonland cards in that player's hand. One of these cards is chosen at random. That specific card is then modified perpetually. If the player has no nonland cards in hand, the ability simply resolves with no effect.

Common Pitfalls

A common mistake is forgetting that 'perpetually' remains even if the card changes zones. If the opponent discards the affected card and later returns it to their hand, the poison trigger is still attached to it. Additionally, remember that the trigger only applies when the spell is cast. If an opponent puts a creature onto the battlefield without casting it, or plays a land, they will not receive the extra poison counter from the Gnat's effect.

When to Strike

Skullpiercer Gnat is best utilized in the early game to maximize the number of corrupted cards in an opponent's hand. Because it has Flying, it can easily bypass ground blockers. In a dedicated poison deck, this pressure forces your opponent into a lose-lose situation: they either hold their spells and fall behind on the board, or cast them and accelerate their own demise via Poison Counter accumulation.

Interaction examples

The First Sting

Poison Counter

Skullpiercer Gnat attacks and is not blocked. It deals 1 combat damage. The Toxic 1 ability gives the opponent their first Poison Counter. Then, a random nonland card in their hand is chosen to perpetually grant another Poison Counter when cast.

Corrupting the Mana Dorks

Llanowar ElvesPoison Counter

If your opponent has Llanowar Elves in hand when Skullpiercer Gnat hits them, that Elf might become corrupted. When the opponent later spends mana to cast Llanowar Elves, the new 'cast' trigger goes on the stack, giving that player a Poison Counter before the Elf even enters the battlefield.

Aerial Superiority

Birds of Paradise

While Birds of Paradise also has Flying, if it is already on the battlefield, it can block the Gnat to prevent the damage trigger. However, if the Gnat hits the player while Birds of Paradise is still in their hand, the Gnat can perpetually corrupt the Birds, making it a dangerous spell for the opponent to cast later.