Pokmon card value is determined by: rarity (limited print runs), condition (PSA 10 commands premiums), historical significance (prototypes, trophy cards), iconic status (Charizard, Pikachu), grading (professionally authenticated), and market demand (collector and investor interest)
With the addition of Mew ex, you can not only add Psychic damage to any deck, but you can also copy some of your opponents best Moves
Japanese boxes also guarantee at least one SR or higher-rarity card per box English boxes do not
Then you can level this up for just two mana and then draw one card from the top three of your library, and put the other two in your graveyard, nice card flow and graveyard filling on one ability
[Deck Title= Simic Henge Baker Neenan] [Creatures] 4 Emry, Lurker of the Loch 4 Ornithopter 4 Gilded Goose 2 Vantress Gargoyle 2 Rhonas the Indomitable [/Creatures] [Spells] 4 The Great Henge 4 Springleaf Drum 2 Once Upon a Time 4 Ensoul Artifact 4 Oko, Thief of Crowns 3 Heart of Kiran [/Spells] [Lands] 6 Island 6 Forest 4 Breeding Pool 4 Botanical Sanctum 3 Darksteel Citadel [/Lands] [Sideboard] 2 Veil of Summer 2 Metallic Rebuke 1 Emrakul, the Promised End 3 Phyrexian Revoker 4 Tireless Tracker 3 Stubborn Denial [/Sideboard] [/Deck] Look, were probably not going to get Emry banned by slotting it into independently broken decks, so lets just try to cast it on turn one and go from there