Guardian Slime
Effect Monster
Guardian Slime is a Effect Monster (WATER/Aqua, Level 10) with 0 ATK / 0 DEF. First printed in Legendary Duelists: Rage of Ra (2020).
- Type
- Effect Monster
- Attribute
- WATER
- Monster type
- Aqua
- Level
- 10
- ATK / DEF
- 0 / 0
- Archetype
- Egyptian God
- Banlist
- Unlimited in the TCG, OCG, and Master Duel
- TCG release
- 2020-09-24
- Printings
- 2
Card text
If you take battle or effect damage: You can Special Summon this card from your hand. During damage calculation, if this card battles an opponent's monster (Quick Effect): You can make this card gain DEF equal to that opponent's monster's ATK during that damage calculation only. If this card is sent from the hand or field to the GY: You can add 1 Spell/Trap from your Deck to your hand that mentions "The Winged Dragon of Ra". You can only use each effect of "Guardian Slime" once per turn.
Approximate value
≈$0.32
YGOPRODeck recorded a lowest available USD card-level price hint of ~$0.32 on Sep 25, 2026 (historical, not a printing-specific quote). It varies with printing, condition, edition, rarity, and grading. Check current listings before buying or selling.
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Printings & rarities
| Set | Set code | Rarity | Release | Price* |
|---|---|---|---|---|
| Legendary Duelists: Rage of Ra | LED7-EN003 | Ultra Rare | 2020-09-24 | $7.32 |
| Magnificent Monsters | MAMO-EN048 | Ultra Rare | 2026-09-04 | $0.32 |
*Approximate, from recent marketplace listings, not market values.
Price hint history
Dated YGOPRODeck snapshots. These hints are not sales or market values.
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Guardian Slime in other languages
| Japanese | ガーディアン・スライム |
| Korean | 가디언 슬라임 |
| German | Wächterschleim |
| French | Gardien Slime |
| Italian | Melma Guardiana |
| Spanish | Limo Guardián |
| Portuguese | Guardião Limo |
