Dark End Dragon is a Dragon Synchro Monster with Attribute DARK, Level 8, ATK 2600, DEF 2100.
Synchro Summons need Tuners plus non-Tuners whose Levels equal the Synchro Monster’s Level.
On the current TCG and OCG Forbidden & Limited lists tracked here, Dark End Dragon is Unlimited.
YGOPRODeck lists Dark End Dragon for these formats: Duel Links, Edison, TCG, OCG, Master Duel.
A listed print of Dark End Dragon appears in Legendary Collection 2: The Duel Academy Years Mega Pack (LCGX-EN188) at Secret Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Dark End Dragon is about $4.88 on Amazon (prices change frequently).
