ZW - Phoenix Bow

The monster effect "You can equip this card from your hand to a 'Number C39: Utopia Ray' you control as an Equip Card" is an Ignition Effect that activates in the hand. (It targets 1 face-up "Number C39: Utopia Ray" in your Monster Zone.)

The effect "The equipped monster gains 1100 ATK" is an effect applied while "ZW - Phoenix Bow" is treated as an Equip Spell card by its own effect. (It does not start a Chain.)

The effect "When the equipped monster destroys an opponent's monster by battle: Inflict 1000 damage to your opponent" is an effect applied while this card is treated as an Equip Spell. (It starts a Chain. It is a mandatory effect that activates at the end of the Damage Step when the monster equipped with "ZW - Phoenix Bow" destroys an opponent's monster by battle. It does not target.)

The monster effect "You can only control 1 face-up 'ZW - Phoenix Bow'" is an effect that is not classified as an Ignition Effect, Trigger Effect, Quick Effect, or Continuous Effect.