Junk Defender

Level 3 EARTH/Warrior Effect
500 ATK / 1800 DEF

When an opponent's monster declares a direct attack: You can Special Summon this card from your hand. Once per turn, during either player's turn: You can have this card gain 300 DEF until the end of this turn.

Rulings – Yugipedia

Printings:

Photon Shockwave: PHSW-EN097 (Rare) - 2011-11-10
Legendary Collection 5D's Mega Pack: LC5D-EN023 (Common) - 2014-10-23

Prices:

Cardmarket: 0.33 €
TCGplayer: $ 0.19