During either players turn, when your opponent would Special Summon a monster: You can send this face-up card to the Graveyard
cards, the value of Synchro Rumble depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Age of Overlord)
Collectors often buy sealed boxes hoping to pull rare hits like Mega Gardevoir ex #092 (MUR) or one of the exclusive Trainer full-arts in the set
No matter which format youre in, this is an incredibly useful ability to have
It equips an Inzektor thats been targeted by an attack to the monster that was attacking it, and for as long as it stays equipped, the Inzektor Duelist now controls that monster
For the trivia buffs out there: The first repeated theme week was Cycling Week