- "If this card is Normal or Special Summoned: You can target 1 monster on the field; destroy it." is a Trigger Effect. (It's an effect that targets 1 monster on the field, it can also be activated during the Damage Step.) 
- When "Kozmo Dark Destroyer" is Summoned by "Ultimate Offering" or "Call of the Haunted" as Chain Link 2 or higher, you can activate its Trigger Effect in a new chain.
- The monster effect, "Cannot be targeted by an opponent's card effects." is a Continuous Effect.
- "If this card is destroyed by battle or card effect and sent to the Graveyard: You can banish this card from your Graveyard; Special Summon 1 Level 7 or lower "Kozmo" monster from your Deck." is a Trigger Effect that activates in the Graveyard. (Banishing the "Kozmo Dark Destroyer" from the Graveyard that was destroyed is a cost. The effect can also activate during the Damage Step.) 
- Special Summon 1 Level 7 or lower "Kozmo" monster from your Deck." is not an effect that targets. (At resolution, you choose 1 "Kozmo" monster to Special Summon from your Deck.) If you do NOT have a Level 7 or lower "Kozmo" monster in your Deck, you cannot activate this effect. 
- Even if "Kozmo Dark Destroyer" is destroyed by a card effect and sent to the Graveyard as Chain Link 2 or higher, you can still activate its Trigger Effect. 
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