If this card in its owner's possession is destroyed by an opponent's attack or card effect: Take 2000 damage, then inflict 2000 damage to your opponent
It has no once per turn clause either, so you can use multiple copies of it to force the opponent to discard multiple cards
Check out the next tournament between neighboring shops San Francisco vs

Therion, 4 Branded Therion, 3 Grass Adventurer Branded Therion, 2 Adventurer Branded Therion, 1 Therion, 1 Lightsworn Therion, 1 Plant Therion) 17 Virtual World (16 Adventurer Virtual World, 1 Virtual World) 13 @Ignister 12 Marincess (11 Marincess, 1 Adventurer Marincess) 10 Adventurer Prank-Kids 8 Dinomorphia (4 Dinomorphia, 3 Branded Dinomorphia, 1 Dogmatika Dinomorphia) 8 Magician 7 Endymion 7 Shaddoll (3 Grass Adventurer Branded Shaddoll, 2 Branded Shaddoll, 1 Grass Branded Shaddoll, 1 Grass Branded Invoked Shaddoll) 7 SPYRAL (5 SPYRAL, 2 Adventurer SPYRAL) 6 EvilTwin 6 Salamangreat 5 ABC (3 Adventurer Therion ABC, 1 Adventurer Branded Therion ABC, 1 Therion ABC) 5 Branded Predaplant 5 Dinosaur (4 Dinosaur, 1 Scrap Dinosaur) 4 Altergeist 4 Zefra 3 Code Talker 3 Invoked (1 Branded Invoked, 1 Branded Dogmatika Invoked, 1 Dogmatika Invoked) 3 Phantom Knights (2 Adventurer Danger Phantom Knights, 1 Danger Phantom Knights) 2 Adventurer Good Stuff 2 Branded Cyber Dragon 2 Branded Thunder Dragon 2 D/D 2 Madolche 2 Orcust (1 P.U.N.K

POTE-EN090 The Most Distant, Deepest Depths Field Spell Card While you control a Fish Synchro monster, this card cannot be destroyed, or banished, by card effects
This is understandable at such an early stage, for sure, but it is worth keeping in mind as we discuss some of these early decks utilising the archetype from recent months