Umbreon is Pokédex #197, generation 2 (Johto). Umbreon ex is a Stage 1 ex Darkness Pokémon with 110 HP. The card says it evolves from Eevee. In this catalog that name is Eevee (#133).
Umbreon ex sits at 112/115 in Unseen Forces, position 114 of 145. Before it is 111 Tyranitar ex, and after it is 113 Entei ★. The set belongs to the EX series. It was released on August 1, 2005. The printed size is 115. This checklist is longer, at 145 cards. The listed rarity is Rare Holo EX.
Darker Ring is listed as Poké-Power. Once during your turn (before your attack), when you play Umbreon ex from your hand to evolve 1 of your Pokémon, switch 1 of your opponent's Benched Pokémon with 1 of the Defending Pokémon. Your opponent chooses the Defending Pokémon to switch. The attack Black Cry lists 20 damage. The cost is Colorless. The Defending Pokémon can't retreat or use any Poké-Powers during your opponent's next turn. Darkness Fang is another attack lists 60 damage. The cost is Darkness, Colorless, Colorless. Weakness is Fighting ×2. Resistance is Psychic -30. Retreat cost is 1. The card text says: When Pokémon-ex has been Knocked Out, your opponent takes 2 Prize cards.
Umbreon (#197) has 45 other cards in the catalog. Those other cards are in 26 sets. The other printings with a release date run from 2001 to 2026. The earliest other card is Umbreon 13/75 in Neo Discovery (2001). That card is named Umbreon, while this one is Umbreon ex. That card lists 80 HP, and this one lists 110 HP. The rarity there is Rare Holo, and here it is Rare Holo EX. Kimiya Masago illustrated that card, and Ryo Ueda illustrated this one. 40 other cards of Umbreon list a different HP.
The illustrator line reads Ryo Ueda. I count 462 other cards in the catalog with that illustrator.
Unseen Forces set binder is where a full Unseen Forces set goes. This card fills one slot there. A generation binder holds one card of each species. Umbreon can fill a slot in Generation 2 binder (Johto). Themed lists that include this exact card are Eevee and the Eeveelutions. I still need this card.
Once during your turn (before your attack), when you play Umbreon ex from your hand to evolve 1 of your Pokémon, switch 1 of your opponent's Benched Pokémon with 1 of the Defending Pokémon. Your opponent chooses the Defending Pokémon to switch.
The Defending Pokémon can't retreat or use any Poké-Powers during your opponent's next turn.
When Pokémon-ex has been Knocked Out, your opponent takes 2 Prize cards.
Unseen Forces, in the EX series. It was released on August 1, 2005. The printed size is 115.
112/115. It is entry 114 of 145 in this checklist.
Ryo Ueda. The catalog lists 462 other cards with that illustrator.
Rare Holo EX.
Umbreon #197, generation 2 (Johto).
Black Cry (20) and Darkness Fang (60).