PS: maybe an idea for finding the missing cards: compare the LQ images downloaded by Forge with your images (comparing the same directories like "4E", "5E", ...)
Since 1996s Mirage, Charms have been an indelible part of Magic, even inspiring multiple new cycles like Cryptic Command and Mystic Confluence
Legendary Creature - Horror Halfling Gorbag of Minas Morgul Whenever a Goblin or Orc you control deals combat damage to a player, you may sacrifice it
Whats nice about those last two options is that they naturally add consistency to your gameplan in addition to functioning as win conditions
They often let other merfolk be played from the library, create merfolk tokens when their allies enter the battlefield, or have ways to protect each other that quickly add up
Ghost Quarter is my pick here, as itll be able to target any land, even basics, and even your own