Doki Doki

Level 2 EARTH/Rock Effect
500 ATK / 500 DEF

You can discard 1 Rock monster; Special Summon from your Deck, 1 Rock monster that has the same original Attribute and Level as that monster, in face-up Attack Position or face-down Defense Position. You can only use this effect of "Doki Doki" once per turn.

Rulings – Yugipedia

Printings:

Invasion: Vengeance: INOV-EN032 (Common) - 2016-11-03
2017 Mega-Tin Mega Pack: MP17-EN144 (Common) - 2017-08-24
Secret Slayers: SESL-EN037 (Super Rare) - 2020-04-03

Prices:

Cardmarket: 0.05 €
TCGplayer: $ 0.23