If this card is Normal or Special Summoned: You can add 1 "Earthbound Prison" or "Harmonic Synchro Fusion" from your Deck or GY to your hand. If you control a Level 6 or higher "Earthbound" monster: You can banish this card from your GY, then target 1 opponent's Effect Monster Special Summoned from the Extra Deck; shuffle it into the Deck, then your opponent can Special Summon 1 monster with the same name from their Extra Deck. You can only use each effect of "Earthbound Prisoner Line Walker" once per turn.