(JP) Hoárr, Generaider Boss of Rumbling-ETCO-JP027-SUPER RARE
You can only control 1 "Hoárr, Generaider Boss of Rumbling". Once per turn, if your opponent adds a card(s) from their Deck to their hand, except during the Draw Phase: You can activate this effect; your opponent must send 1 monster they control or in their hand to the GY. When a card or effect is activated (Quick Effect): You can Tribute 2 "Generaider" monsters and/or Spellcaster monsters; negate the activation, and if you do, destroy that card. You can only use this effect of "Hoárr, Generaider Boss of Rumbling" once per turn.