math mech yugioh deck MYFI-EN003 - Mathmech Addition - Super Rare - Mystic Fighters MATHMECH DECK GUIDE (Combo Guide

So put away those small Joey Wheeler dollars and bring out the big Seto Kaiba bucks

"Virtual World" Extra Deck monsters have largely generic summoning conditions and effects, providing board-breaking ("Jiujiu", "Fanfan", "Jaja"), disruption ("Longlong"), and floodgating ("Shenshen") effects, and loosely synergize with the Deck's use of banishing and its combination of monster Types and Attributes

If destroyed, it can also send an opponents monster to the graveyard

This makes farming for cards you need in Free Duel all but a necessity, particularly due to late-game enemies playing monsters far stronger than anything you likely have outside of fusion