Wattaildragon

Level 6 LIGHT/Dragon Normal
2500 ATK / 1000 DEF

Capable of indefinite flight. Attacks by wrapping its body with electricity and ramming into opponents.
IMPORTANT: Capturing the "Wattaildragon" is forbidden by the Ancient Rules and is a Level 6 offense, the minimum sentence for which is imprisonment for no less than 2500 heliocycles.

Rulings – Yugipedia

Printings:

Galactic Overlord: GAOV-EN001 (Common) - 2012-05-08
Starter Deck: Kaiba Reloaded: YSKR-EN012 (Common) - 2013-12-06
Super Starter: Space-Time Showdown: YS14-EN001 (Common) - 2014-07-10

Prices:

Cardmarket: 0.07 €
TCGplayer: $ 0.12