Firewall Guardian
Effect Monster
Firewall Guardian is a Effect Monster (DARK/Cyberse, Level 4) with 100 ATK / 2000 DEF. First printed in Dark Neostorm (2019).
- Type
- Effect Monster
- Attribute
- DARK
- Monster type
- Cyberse
- Level
- 4
- ATK / DEF
- 100 / 2000
- Banlist
- Unlimited in the TCG, OCG, and Master Duel
- TCG release
- 2019-05-02
- Printings
- 1
Card text
If this card is sent to the GY as material for the Link Summon of a Cyberse monster: You can Special Summon this card, but banish it when it leaves the field. When an attack is declared involving your Link Monster and an opponent's Link Monster: You can banish this card from your GY; negate that attack, and if you do, until the end of this turn, the original ATK of that opponent's monster becomes 0, also it is unaffected by other card effects, except its own. You can only use each effect of "Firewall Guardian" once per turn.
Approximate value
≈$0.25
A rough figure from recent listings (updated 2026-08-03), not a market value or official price. It varies a lot with printing, condition, edition, rarity, and grading. Check current listings below before buying or selling.
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Printings & rarities
| Set | Set code | Rarity | Release | Price* |
|---|---|---|---|---|
| Dark Neostorm | DANE-EN001 | Common | 2019-05-02 | $0.25 |
*Approximate, from recent marketplace listings, not market values.
Firewall Guardian in other languages
| Japanese | ファイアウォール・ガーディアン |
| Korean | 파이어월 가디언 |
| Chinese | 防火墙守护者 |
| German | Firewall-Wächter |
| French | Gardien Pare-Feu |
| Italian | Guardiano Firewall |
| Spanish | Guardián Cortafuego |
| Portuguese | Guardião Firewall |