Psychic Wave — Ruling

Effetto 1

This card's effect that inflicts 600 damage to your opponent is the effect applied when this card's activation resolves. (It does not target. It can be activated optionally during either player's turn, but cannot be activated during the Damage Step.)
Sending 1 Jinzo from your hand or Deck to the Graveyard is the cost to activate this card.

This card's effect that sends a "Jinzo" monster from your Deck to the Graveyard and adds a Machine monster from your Graveyard to your hand is an effect that activates in the Graveyard. (It targets 1 Machine monster in your Graveyard. It can be activated optionally during your Main Phase. Banishing this card from your Graveyard is the cost to activate this effect.)
Sending a "Jinzo" monster from your Deck to the Graveyard and adding the targeted Machine monster to your hand happen simultaneously.