explorer: 
  type: world 
  debug: true
  events: 
    on player enters biome: 
    - if <player.flag[explorer].as_list.contains[<player.location.biome>]> { 
      } else {
      - flag <player> explorer:->:<player.location.biome> 
      - narrate "<&6>Hermes<&f>: You still need to find: <script.yaml_key[biomes].exclude[<player.flag[explorer].as_list>]>"
      }
  biomes: 
    - BEACH 
    - BIRCH_FOREST 
    - DEEP_OCEAN 
    - DESERT 
    - EXTREME_HILLS 
    - FLOWER_FOREST 
    - FOREST 
    - FROZEN_OCEAN 
    - FROZEN_RIVER 
    - HELL 
    - ICE_PLAINS_SPIKES 
    - JUNGLE 
    - MEGA_SPRUCE_TAIGA 
    - MEGA_TAIGA 
    - MESA 
    - MUSHROOM_ISLAND 
    - OCEAN 
    - PLAINS 
    - ROOFED_FOREST 
    - SAVANNA 
    - SAVANNA_PLATEAU 
    - SUNFLOWER_PLAINS 
    - SWAMPLAND 
    - TAIGA