# Umbreon δ (Delta Species) Umbreon δ represents a key card from the Delta Species era, when Pokémon TCG experimented with typing mechanics. This Rare Holo appeals to collectors interested in mid-2000s design philosophy and alternate-type Pokémon. The δ designation itself marks a specific mechanical identity that defined the set's identity. Collectors typically pursue this card for set completion or as part of Umbreon collections, given the character's dedicated fanbase. The holofoil and reverse holofoil variants offer collecting paths at different price points. Condition matters significantly for Rare Holos from this period, as centering and surface wear are common concerns. The card's appeal lies more in nostalgic set representation than competitive playability.