Paleozoic Dinomischus

Normal Trap Card

Target 1 face-up card on the field; discard 1 card, and if you do, banish it. Once per Chain, when a Trap Card is activated while this card is in your GY: You can Special Summon this card as a Normal Monster (Aqua/WATER/Level 2/ATK 1200/DEF 0). (This card is NOT treated as a Trap.) If Summoned this way, this card is unaffected by monster effects, also banish it when it leaves the field.

Rulings – Yugipedia

Printings:

Invasion: Vengeance: INOV-EN096 (Common) - 2016-11-03
2017 Mega-Tin Mega Pack: MP17-EN169 (Common) - 2017-08-24
OTS Tournament Pack 7: OP07-EN011 (Super Rare) - 2018-04-13
OTS Tournament Pack 7 (POR): OP07-PT011 (Super Rare) - 2018-04-13
Duel Overload: DUOV-EN098 (Ultra Rare) - 2020-03-19
Structure Deck: Dark World: SR13-EN039 (Common) - 2022-12-01

Prices:

Cardmarket: 0.17 €
TCGplayer: $ 0.12