what is the extra deck used for in yugioh Complete Custom Yu-Gi-Oh! How to Extra Deck Summon

Indominus Rex, Alpha is a neat legendary Creature with some interesting abilities

Snake-Eyes Doomed Dragon (Platinum Secret Rare) English - Near Mint - 1st Edition Product Details Number : RA05-EN039 Rarity : Platinum Secret Rare Attribute : FIRE Monster Type : Dragon Card Type : Effect Fusion Monster Attack : 3000 Defense : 2500 Description : 1 "Snake-Eye" monster + 1 Illusion monster Must be either Fusion Summoned, or Special Summoned by sending 2 face-up Monster Cards from your Spell & Trap Zone to the GY

In addition, these characters' Tokens have some additional text on the bottom

If you need to do more damage, get 10 cards in your Lost Zone, use Star Requim to OHKO any Pokemon standing in your path