Harrier GriffinHow it works & interactions with other cards

Tactical Superiority

Harrier Griffin is a 3/3 creature with Flying, making it difficult for many decks to block. Its most important feature, however, is its triggered ability that occurs at the beginning of your upkeep. This ability allows you to target any creature on the battlefield and tap it, preventing it from attacking or using abilities that require tapping until its controller's next untap step.

Resolution Step by Step

The process begins at the start of your upkeep phase. First, the triggered ability goes on the stack and you must choose a target creature. Second, players may respond with spells or abilities. Finally, if the target is still legal, the creature becomes tapped. Because this happens during your upkeep, the creature you tap will remain tapped throughout your combat phase, effectively removing it as a potential blocker.

Mandatory Targets

One common mistake involves the mandatory nature of the 'target' keyword. The ability is not optional; you must choose a target creature if one is available. According to official rulings, if your opponents do not control any creatures, you are forced to target Harrier Griffin itself or another creature you control. Always check the board state before the turn begins to ensure you don't accidentally sabotage your own attackers.

Strategic Timing

Since the ability triggers during your upkeep, it is most effective at clearing a path for your own creatures. By tapping down a high-power defender, you ensure your ground troops can swing in for damage without fear of being blocked by the opponent's strongest asset.

Interaction examples

Neutralizing a Threat

Sun Titan

At the start of your upkeep, you target your opponent's Sun Titan with the Harrier Griffin ability. The Sun Titan is tapped, which means it cannot be used to block your incoming attackers later in the turn, even though it has Vigilance.

Weakening the Horror

Psychosis Crawler

If an opponent controls Psychosis Crawler, its power and toughness fluctuate based on their hand size. During your upkeep, you can use Harrier Griffin to tap it down. This prevents the Crawler from being an effective blocker during your combat phase, regardless of how many cards your opponent draws later.

Self-Tapping Penalty

If Harrier Griffin is the only creature on the battlefield when your upkeep begins, its ability must target itself. The Griffin will become tapped, meaning it won't be able to attack during your combat phase that turn.