Dark End Dragon [RYMP-EN066] Super Rare BW65 each with a unique hook:

each with a unique hook: King Arthur can sacrifice cards to pump up his attacks

and other treasures in Pokémon TCG booster packs

Set: Ninth Edition Type: Enchantment Rare Cost: {2}{G}{G} Sacrifice a creature: Draw cards equal to the sacrificed creature's power

and greenery tiles

Set: GRN Guild Kit Type: Creature — Elf Shaman Rare Cost: {B/G} {T}: Exile target land card from a graveyard

Dark End Dragon [RYMP-EN066] Super Rare BW65 each with a unique hook:Set: Ra Yellow Mega Pack Card type: Synchro Effect Monster Rarity: Super Rare Attack: 2600 Defense: 2100 1 Tuner + 1 or more non Tuner DARK monsters Once per turn: You can target 1 monster your opponent controls; this card loses 500 ATK and DEF, and you send that target to the Graveyard.