Master of the Pearl Trident 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
Other Merfolk creatures you control get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
Complete guide
Master of the Pearl Trident is a cornerstone of Merfolk tribal decks, acting as both a powerful buff and a reliable win condition. By granting other Merfolk +1/+1 and the islandwalk ability, it transforms a small school of fish into an unblockable army. Understanding how its static abilities interact with your creatures is key to dominating the battlefield.
A Beacon for the Deep
Master of the Pearl Trident provides two distinct benefits to other Merfolk you control. First, it offers a static +1/+1 power and toughness boost, often referred to as a 'lord' effect. Second, it grants them islandwalk, a keyword that makes your Merfolk unblockable if the defending player controls at least one land with the Island subtype. Note that these bonuses only apply to other Merfolk you control; the Master does not buff itself.
How the Tide Rises
The ability is a static effect that exists as long as Master of the Pearl Trident is on the battlefield. As soon as it enters, your other Merfolk immediately grow in size and gain islandwalk without any triggers needing to resolve. Conversely, the moment Master of the Pearl Trident leaves the battlefield, these bonuses vanish. This happens instantly and does not use the stack.
Fragile Leadership
A common mistake involves timing and combat damage. Damage marked on a creature stays there until the Cleanup step at the end of the turn. If a Merfolk you control takes damage that wouldn't kill it while the Master is present, but then the Master is destroyed later in the same turn, that Merfolk's toughness will drop. If the damage marked on it now meets or exceeds its new, lower toughness, the Merfolk will be destroyed by state-based actions.
Tactical Deployment
The best time to play Master of the Pearl Trident is usually right before a decisive combat phase. Since it grants islandwalk, it can invalidate your opponent's blockers entirely if they are playing Blue. If your opponent is not playing Blue, you may need to use other effects to give them an Island to ensure your army can swim past their defenses.
Interaction examples
If you have two copies of Master of the Pearl Trident on the battlefield, each one grants +1/+1 and islandwalk to the other. This results in two 3/3 creatures that are both unblockable if your opponent controls an Island.
Foundry InspectorIf you control Master of the Pearl Trident and a Foundry Inspector, the Foundry Inspector does not receive any bonuses. Even though it is a creature you control, it does not have the Merfolk creature type, so it remains a 3/2 and can be blocked as normal.
Ornithopter of ParadiseYou can use Ornithopter of Paradise to produce the Blue mana required to cast Master of the Pearl Trident. However, once the Master is on the field, the Ornithopter of Paradise does not gain +1/+1 or islandwalk because it is a Thopter, not a Merfolk.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Master of the Pearl Trident
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to a Merfolk you control may become lethal if Master of the Pearl Trident leaves the battlefield during that turn.
No other card is named in this ruling.
Legal formats
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Meta decks with Master of the Pearl Trident
No archived Top 8 deck with this card yet.