U.A. Perfect Ace

The effect "①: You can Special Summon this card (from your hand) by returning 1 'U.A.' monster you control, except 'U.A. Perfect Ace', to the hand" is an effect that is not classified as an Ignition Effect, Trigger Effect, Quick Effect, or Continuous Effect. (A Chain Link is not built when performing a Special Summon this way.)

When performing a Special Summon via the effect "①: You can Special Summon this card (from your hand) by returning 1 'U.A.' monster you control, except 'U.A. Perfect Ace', to the hand," the procedure is to return 1 face-up "U.A." monster in your Monster Zone to the owner's hand, and then Special Summon this card. (The process is not considered to be completed by the act of returning the monster to the hand.)

The effect "②: Once per turn, during your opponent's turn, when a Spell/Trap Card, or monster effect, is activated: You can discard 1 card; negate the activation, and if you do, destroy it" is a Quick Effect that can only be activated during your opponent's turn. (This effect does not target. Discarding 1 card is a cost to activate this effect. This effect can also be activated during the Damage Step.)

This effect is activated by chaining directly to the activation of a Spell/Trap Card, the activation of a Spell/Trap effect, or the activation of a monster effect, when any of these occur during your opponent's turn.