If "Cyber Dragon" is in your GY: You can activate 1 of these effects. If you have 3 or more "Cyber Dragon" in your GY at activation, you can activate both effects and resolve in sequence. You can only activate 1 "Cyber Repair Plant" per turn.
● Add 1 LIGHT Machine monster from your Deck to your hand.
● Target 1 LIGHT Machine monster in your GY; shuffle that target into your Deck.