We're all quite used to this effect on digital card games, especially in Hearthstone where cards that shuffle cards into the opponent's deck are fairly commonplace
This monster is insanely powerful, but it loses some value due to being limited in tournament play
While the banishing occurs after the Battle Phase, it can ensure the opposing player can't build back up their field
To trigger that you always lose the "Tri-and-Guess" effect, simply put fifteen Link monsters into the Extra Deck and take an Extra Deck monster type that the enemy will surely use
Ancient Gear Factory X SPELL Reveal 1 Level 5 or higher "Ancient Gear" monster from your hand, then banish a number of "Ancient Gear" monsters from your Graveyard, whose combined Levels are double the revealed monster's, and if you do, if you Normal Summon the revealed monster this turn, you must Normal Smmon it without Tributing