Master of the Pearl Trident [The Lost Caverns of Ixalan Commander]

Set: The Lost Caverns of Ixalan Commander Type: Creature — Merfolk Rarity: Common Cost: {U}{U} Other Merfolk creatures you control get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.) “Let the land dwellers know the coast is no longer the border between our realms. A new age of empire has begun.”