Superancient Deepsea King Coelacanth (PTDN-EN034) [Phantom Darkness]

Once per turn, you can discard 1 card to Special Summon as many Level 4 or lower Fish-Type monsters as possible from your Deck. A monster Special Summoned by this effect cannot declare an attack and its effect(s) is negated while on the field. If this card is targeted by a Spell, Trap, or Effect Monster's effect, you can Tribute 1 other Fish-Type monster to negate the effect and destroy that card.