One-Way Synchro

Add to your hand, or Special Summon, 1 Level 1 Tuner from your Deck or GY. If this card is in your GY and you control "Junk Warrior" or a monster that mentions it: You can Set this card, but banish it when it leaves the field. You can only use 1 "One-Way Synchro" effect per turn, and only once that turn.