Machina Fortress

Level 7 EARTH/Machine Effect
2500 ATK / 1600 DEF

You can discard Machine monster(s) whose total Levels equal 8 or more, then Special Summon this card (from your hand or GY). If this card is destroyed by battle and sent to the GY: Target 1 card your opponent controls; destroy that target. Before resolving an opponent's monster effect that targets this face-up card, look at your opponent's hand and discard 1 card from their hand.

Rulings – Yugipedia

Printings:

Machina Mayhem Structure Deck: SDMM-EN001 (Ultra Rare) - 2010-02-19
Battle Pack: Epic Dawn: BP01-EN022 (Rare) - 2012-05-24
Battle Pack: Epic Dawn: BP01-EN022 (Starfoil Rare) - 2012-05-24
Astral Pack Six: AP06-EN020 (Common) - 2014-12-05
Legendary Dragon Decks: LEDD-ENB11 (Common) - 2017-10-05
Structure Deck: Mechanized Madness: SR10-EN004 (Common) - 2020-04-16
Quarter Century Bonanza: RA03-EN233 (Platinum Secret Rare) - 2024-11-07
Quarter Century Bonanza: RA03-EN233 (Quarter Century Secret Rare) - 2024-11-07

Prices:

Cardmarket: 0.51 €
TCGplayer: $ 0.55