Other Merfolk creatures you control get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
Digital-only printing
No paper market price
Master of the Pearl Trident from Jumpstart: Historic Horizons is a digital-only printing (MTG Arena or Magic Online). This printing has no physical card, so TCGplayer and Cardmarket paper prices do not apply.
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