Malefic Truth Dragon

Level 12 DARK/Dragon Effect Monster
5000 ATK / 5000 DEF

Cannot be Normal Summoned/Set. Must be Special Summoned by its own effect, and cannot be Special Summoned by other ways. If a "Malefic" monster you control, except "Malefic Truth Dragon", is destroyed by battle or by card effect: You can pay half your Life Points; Special Summon this card from your hand or Graveyard. There can only be 1 "Malefic" monster on the field. If there is no face-up Field Spell Card on the field, destroy this card. If this card destroys an opponent's monster by battle: Destroy all face-up monsters your opponent controls.

Rulings – Yugipedia

Printings:

Shonen Jump Vol. 9, Issue 3 promotional card: JUMP-EN048 (Ultra Rare) - 2011-03-01
Collectible Tins 2012 Wave 2: CT09-EN016 (Super Rare) - 2012-10-26
Star Pack 2014: SP14-EN044 (Common) - 2014-02-21
Star Pack 2014: SP14-EN044 (Starfoil Rare) - 2014-02-21

Prices:

Cardmarket: 0.17 €
TCGplayer: $ 0.33