Paleozoic Marrella (INOV-EN097) [Invasion: Vengeance]

Send 1 Trap Card from your Deck to the Graveyard. Once per Chain, when a Trap Card is activated while this card is in your Graveyard: Special Summon this card as a Normal Monster (Aqua-Type/WATER/Level 2/ATK 1200/DEF 0). (This card is NOT treated as a Trap Card.) If Summoned this way, this card is unaffected by monster effects, also banish it when it leaves the field.