Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hnad) by banishing 1 Level 8 or lower Thunder monster from your hand or face-up from your field during the turn a Thunder monster’s effect is activated in the hand.
(1) Once per turn, during your opponent’s turn (Quick Effect): You can banish 2 cards from your GY, including a Thunder monster, then target 1 Thunder monster you control; it cannot be targeted by an opponent’s card effect for the rest of this turn.
(2) Once per turn, during your End Phase: You can send 1 “Thunder Dragon” card from your Deck to the GY.