This card's [When Attacking] effect reads ""your opponent's Digimon that share a name with the returned card,"" therefore if you return your opponent's [Greymon] to their deck, you can only delete your opponent's Digimon with the [Greymon] name
Finally, and most likely, obviously a 600 atk monster is vulnerable to other monsters, it has no flesh, and especially since your opponent can just plop their monster (700 atk or more) in a DIFFERENT zone on their turn and blow it up
Each of these triggers will reveal the top card of your library
From Wikimon Categories: List of Cards List of Digimon Cards (DCG) ST-10 List of Tailmon Cards List of Digimon Cards with 4000 DP List of Yellow Digimon Cards List of Purple Digimon Cards List of Dual-Colored Digimon Cards List of Digimon Cards with 5 Play Cost List of Lv.4 Digimon Cards (DCG) List of Adult-Level Digimon Cards (DCG) List of Vaccine-Attribute Digimon Cards (DCG) List of Holy Beast Digimon Cards (DCG) List of Cards Illustrated by Takase List of Cards Illustrated by koki List of Super Rare Cards (DCG) List of Cards with First Parallel List of Cards with Second Parallel List of Cards with Block Icon 01
This is the first time the commemorative card from 2016 has hit the auction circuit, giving fans with heavy purse strings a rare chance at a decidedly non-standard card
As such, they were given a unique copy of their own Pokemon card pretty awesome for them, right