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"Danger! Zone"
  • かいいき
  • 未界域 (base)
  • みかいいき (ruby)
  • Mikai'iki (romanized)
  • Lands Unknown (translated)
Simplified Chinese
  • 未界域
  • Danger !
  • Gefahr!
  • Pericolo!
  • 미계역
  • 未界域 (Hanja)
  • Migyeyeok (romanized)
  • Perigo!
  • ¡Peligro!
Simplified Chinese

"Danger!", named "Lands Unknown" (かいいき Mikai'iki) in Japan, is an archetype of DARK monsters of various Types that debuted in Cybernetic Horizon.



The members of the "Danger!" archetype are based on various cryptids, mysterious animals of questionable origins that are believed to exist somewhere in the world.

The "Danger!" monsters inhabit an unexplored island called "Umaria", shown in "Realm of Danger!". The artworks of various "Danger!" cards depict expedition teams of human explorers interacting with this new land and its inhabitants.


The TCG names of the Level 3 "Danger!" monsters modify their archetypal name with "Danger!?", and their individual names replace the exclamation marks (!) with question marks (?). This is likely due to their relatively harmless appearances clashing with the undertone of urgency from the regular naming scheme. Such a distinction does not exist in their OCG names.

Level Danger! Type Cryptid origin
3 Jackalope? Beast Jackalope
Tsuchinoko? Reptile Tsuchinoko
4 Chupacabra! Fiend Chupacabra
Mothman! Insect Mothman
7 Dogman! Beast-Warrior Dogman
Nessie! Aqua Loch Ness Monster
8 Bigfoot! Beast Bigfoot
Yeti (alternate art)
Ogopogo! Sea Serpent Ogopogo
Thunderbird! Winged Beast Thunderbird

Playing style[edit]

All "Danger!" monsters share two effects:

  1. You can reveal this card in your hand; your opponent randomly chooses 1 card from your entire hand, then you discard the chosen card. Then, if the discarded card was not [its own name], Special Summon 1 [its own name] from your hand, and if you do, draw 1 card. (non-once per turn)
  2. If this card is discarded: You can [Trigger Effect]. (only once per turn)
"Danger!" Effects
Role Danger! Trigger Effect
Swarming Tsuchinoko Special Summon this card.
Jackalope Special Summon 1 "Danger!" monster from Deck (in Defense, except "Jackalope")
Chupacabra Special Summon 1 "Danger!" monster from GY (targets, except "Chupacabra")
Consistency Mothman Have both players draw 1 card, then both players discard 1 card.
Nessie Add 1 "Danger!" card from Deck to hand, except "Nessie".
Ogopogo Send 1 "Danger!" card from Deck to GY, except "Ogopogo".
Offensive Dogman Have all opposing face-up monsters lose 1000 ATK this turn.
Bigfoot Target 1 opposing face-up card; destroy it.
Thunderbird Target 1 opposing Set card; destroy it.

These shared effects simulates "Danger!" monsters revealing themselves in the wilderness (i.e.: in their owner's hand), going back into "hiding", and prompting the opponent try to "catch" the monsters (i.e.: correctly discarding the monster from the hand).

Though "Danger!" monster effects are fundamentally luck-based, activating a "Danger!" monster effect rarely incurs a card disadvantage (though they do slowly reduce the player's hand size, making it easier to "catch" a "Danger!" monster). "Danger!" monsters can easily swarm the field between their "monster catching" and discard swarming effects, and provide materials for Extra Deck plays.

The "Danger!" archetype synergizes especially well with archetypes that benefit from being discarded, such as the "Dark World" and "Fabled" monsters.

Recommended cards[edit]


As their effects work only in the hand or in the Graveyard, they're weak to commonly-used cards such as "Abyss Dweller", the often Side-Decked card "Shadow-Imprisoning Mirror", and less-seen cards like "Debunk" or "Skull Meister". In the same way, the archetype is vulnerable to cards like "Macro Cosmos" and "Dimensional Fissure", that banish their monsters.

Because the monsters have to reveal themselves in the hand, cards like "Ceremonial Bell" and "Respect Play" can seriously disrupt this Deck's strategy, because they simply reveal the monsters so their owner can no longer reveal them by their own effect. Also because the Deck revolves around Special Summoning, cards such as "Vanity's Fiend" and "Vanity's Ruler" can also impede the Deck by preventing you from Special Summoning.

The Deck is, to some extent, luck-based. If the random card discarded by the opponent is not a "Danger!" monster, this can hamper the Deck's overall consistency; however, this can be alleviated by including "Dark World" and/or "Fabled" monsters in the Deck. Also, losing a Hand trap could be a problem, so the Deck cannot rely on them as consistently as other strategies.