Firewall eXceed Dragon

Rank 4 DARK/Cyberse XYZ Monster
2500 ATK / 2000 DEF

2+ Level 4 monsters
This Xyz Summoned card gains 500 ATK x the total Link Rating of Link Monsters linked to this card. You can detach 2 materials from this card, then target 1 Link-4 Cyberse Link Monster in your GY; Special Summon it to your field so it points to this card, also you cannot Special Summon other monsters or attack directly for the rest of this turn.

Rulings – Yugipedia

Printings:

Dark Neostorm: DANE-EN036 (Ultra Rare) - 2019-05-02
2020 Tin of Lost Memories Mega Pack: MP20-EN067 (Super Rare) - 2020-08-27

Prices:

Cardmarket: 0.13 €
TCGplayer: $ 0.13