You can only use each effect of “Striker Dragon” once per turn.
If this card is Link Summoned: You can add 1 “Boot Sector Launch” from your Deck to your hand.
You can target 1 face-up monster you control and 1 “Rokket” monster in your GY; destroy the targeted monster, and if you do, add the targeted “Rokket” from your GY to your hand.