Shell Knight — Ruling

Effetto 1

This card's effect that changes this card to Defense Position and inflict 500 damage to your opponent is a Trigger Effect that can be activated on the field.
When resolving this effect, you change this card to Defense Position, and inflict 500 damage to your opponent. (These parts are treated as happening simultaneously.)

This card's effect that adds 1 Level 8 Rock monster from your Deck to your hand, or, if Fossil Fusion is in your Graveyard, allows you to Special Summon it instead, is a Trigger Effect that can be activated if this card is destroyed by battle or sent to the Graveyard by a card effect. (It can be activated during the Damage Step.)
When resolving this effect, you add 1 Level 8 Rock monster from your Deck to your hand, or, if Fossil Fusion is in your Graveyard, you can Special Summon it instead of adding it to you hand.
After this effect is activated, you cannot activate cards, or the effects of cards, with the same name as that Level 8 Rock monster for the rest of this turn. (It applies regardless of whether you add it to your hand or Special Summon it.)