It means they cant be countered - and if you also find a way to flicker your enchantments to ensure they can enter the battlefield without being cast at all, you suddenly have a way to put nearly everything in your deck into play with ease
It's probably fine this one stays for now
He also goes just fine into decks packed with historic cards, be they a 'Jodah, the Unifier' legends matter deck, or something stuffed with artifacts
5 Dragonite VStar (Secret) $31.13 Dragonite VSTAR lets you glance at the top 12 cards of your deck, yanking any Energy cards you find and attaching them however you like
This would have a ton of play in the set, disrupting opposing tribal synergies and letting you abuse powerful tribal hate cards
In order to do so, they must use duplicate cards and Shinedust