The Tyrant Neptune 
100
Level 10 WATER/Reptile Effect0 ATK / 0 DEF
Cannot be Special Summoned. You can Tribute Summon this card by Tributing 1 monster. This card gains the total original ATK and DEF of the monster(s) Tributed for its Tribute Summon. When this card is Tribute Summoned: Target 1 Effect Monster in the Graveyard that was Tributed for the Tribute Summon; this card's name becomes that target's name, and this card gains that target's effects.
Printings:
Shonen Jump May 2010 subscription bonus: JUMP-EN041 (Ultra Rare) - 2010-05-01Collectible Tins 2011 Wave 2: CT08-EN018 (Super Rare) - 2011-11-01
Prices:
Cardmarket: 0.51 €TCGplayer: $ 0.73