① "Ancient Gear" monsters can be Tribute Summoned face-up for 1 less Tribute.
② When destroyed and sent to the GY: You can Special Summon 1 "Ancient Gear" monster from your hand/Deck/GY.
● You can't Tribute Set using the ① effect.
● In Edison, there can only ever be 1 face-up Field Spell on the field.
● If you control this, and you activate another Field Spell:
This card is destroyed, and its ② misses is timing.
● If you control this, and your opponent activates another Field Spell:
This card is destroyed, and its ② activates (it does not miss its timing).
● If you Set another Field Spell while this card is in the Field Spell Zone (face-up or face-down), this card is destroyed, and its ② effect can be activated.