Tearlaments Havnis

When your opponent activates a monster effect on the field (Quick Effect): You can Special Summon this card from your hand, and if you do, send the top 3 cards of your Deck to the GY. If this card is sent to the GY by card effect (except during the Damage Step): You can Fusion Summon 1 Fusion Monster from your Extra Deck, by placing Fusion Materials mentioned on it from your hand, field, and/or GY, including this card from your GY, on the bottom of the Deck in any order. You can only use each effect of "Tearlaments Havnis" once per turn.

Aqua DARK Effect Monster 3 effect