Elemental HERO Mariner (LCGX-EN054)

"Elemental HERO Bubbleman" + "Elemental HERO Avian"

Must be Fusion Summoned and cannot be Special Summoned by other ways. While you have any face-down card(s) in your Spell & Trap Card Zones, this card can attack your opponent directly.

Warrior / Fusion / Effect, Legendary Collection 2: The Duel Academy Years Mega Pack