Superheavy Samurai Soulbuster Gauntlet

Level 1 EARTH/Machine Effect
0 ATK / 400 DEF

You can target 1 "Superheavy Samurai" monster you control; equip this monster from your hand or field to that target. It gains 400 DEF. During either player's Damage Step, when a Defense Position "Superheavy Samurai" monster you control battles an opponent's monster, and you have no Spell/Trap Cards in your Graveyard: You can send this card from your hand to the Graveyard; your battling monster's DEF becomes double its original DEF until the end of this turn.

Rulings – Yugipedia

Printings:

Crossed Souls: CROS-EN009 (Common) - 2015-05-14
2016 Mega-Tin Mega Pack: MP16-EN008 (Common) - 2016-09-01
Star Pack Battle Royal: SP17-EN012 (Common) - 2017-03-09
Star Pack Battle Royal: SP17-EN012 (Starfoil Rare) - 2017-03-09

Prices:

Cardmarket: 0.10 €
TCGplayer: $ 0.11