You can Tribute 1 "T.G." monster; Special Summon 1 "T.G." monster from your Deck with a different original name than that Tributed monster's. If you control a Machine "T.G." monster: You can target 1 Level 4 or lower "T.G." monster in your GY; Special Summon it in Defense Position, but negate its effects. You can only use each effect of "T.G. Rocket Salamander" once per turn.