Mastemon

Card Number
ST10-06
Rarity
SR
Category
Digimon
Level
6
Block Icon
01
Supplemental Rarity
Alternative Art #2
Colour
Yellow Purple
Play Cost
13
DP
13000
Form
Mega
Attribute
Vaccine
Type
Angel
Digivolution Requirements
Digivolve Cost
5
Colour
Yellow Purple
Level
5
Category
Digimon
Effect

DNA Digivolution 0 fromYellowLv.5 +PurpleLv.5 Digivolve unsuspended with the 2 specified Digimon stacked on top of each other. When Digivolving Place 1 yellow or purple Digimon card from your trash on top of your security stack face down. When DNA digivolving, search your security stack, and you may play 1 level 5 or lower Digimon card among it without paying its cost. All Turns When you play another Digimon using an effect, delete 1 of your opponent's Digimon whose level is less than or equal to the played Digimon's level.

Errata
Date
Correction

[When Digivolving] Place 1 yellow or purple Digimon card from your trash on top of your security stack face down. When DNA digivolving, you may search your security stack for, and you may play 1 level 5 or lower Digimon card and playmong it without paying its memory cost. Then, shuffle your security stack.

Q&A
Date
Question

Does this card's [When Digivolving] effect activate when performing a non-DNA digivolution?

Answer

When performing a non-DNA digivolution, only the “Place 1 yellow or purple Digimon card from your trash on top of your security stack face down” part of the effect activates. The part of the effect that reads, “you may search your security stack for 1 level 5 or lower Digimon card and play it without paying its memory cost” only activates when DNA digivolving.

“Then, shuffle your security stack” activates no matter what kind of digivolution you perform.

Date
Question

Does this card's [All Turns] effect also activate when the [Security] effect of one of my Security Digimon plays it into my battle area?

Answer

Yes, it does.

Date
Question

Does this card's [All Turns] effect activate when [BT1-089 Mimi Tachikawa]'s effect moves a Digimon from my breeding area to my battle area?

Answer

No, moving a Digimon from your breeding area doesn't count as playing it, so the effect doesn't activate.

Date
Question

My level 4 Digimon was played by an effect, then this card's [All Turns] effect and another effect triggered simultaneously. I activated the other effect, then the level of my Digimon that was played by an effect increased from 4 to 5.

If I then activate this card's [All Turns] effect, what levels of Digimon can I delete?Jul. 4, 2025 Updated

Answer

Level 4 or lower.

If the same reference to a "played" trigger condition being performed is made for an effect when it has a "when X is played" trigger condition, the state when the effect has triggered will be referenced.

In this case, your Digimon was level 4 when this card's [All Turns] effect triggered, therefore you can delete a level 4 or lower Digimon.

Date
Question

My level 4 Digimon was played by an effect, then this card's [All Turns] effect and another effect triggered simultaneously. I activated the other effect, then my Digimon that was played by an effect was removed from the battle area.

If I then activate this card's [All Turns] effect, can I delete an opponent's Digimon?Jul. 4, 2025 Updated

Answer

Yes, you can delete it.

If the same reference to a "played" trigger condition being performed is made for an effect when it has a "when X is played" trigger condition, the state when the effect has triggered will be referenced.

In this case, your Digimon was level 4 when this card's [All Turns] effect triggered, therefore you can delete a level 4 or lower Digimon.

Releases
Genre
Booster Pack
Release Name
DIMENSIONAL PHASE [BT-11]
Official Product Page
Date
Notes
BOOSTER DIMENSIONAL PHASE [BT11] Errata Card
Alternate Arts

en ST10-06 Starter Decks PARALLEL WORLD TACTICIAN[ST-10] Errata Card

en ST10-06 P1 THEME BOOSTER DIGITAL HAZARD [EX-02] Box Topper ADVENTURE BOX Errata Card

International Arts

ja ST10-06 スタートデッキ 異世界の軍師 [ST-10]

ja ST10-06 P1 [Amazon.co.jp限定]バンダイ (BANDAI) デジモンカードゲーム スタートデッキ コンプリートセット2021

ja ST10-06 P2 ブースターパック ディメンショナルフェイズ [BT-11]

zh-Hans ST10-06 异世界的军师【STC-10】

zh-Hans ST10-06 P1 宣传卡【P】

zh-Hans ST10-06 P2 ACROSS DIMENSION【BTC-06】

ko ST10-06 스타트 덱 이세계의 군사 [STK-10]

ko ST10-06 P1 조그레스컵 참가상

ko ST10-06 P2 부스터 팩 디멘셔널 페이즈 [BTK-11]

GET /cards/en/ST10-06_P2

JSON:API

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                "answer": "When performing a non-DNA digivolution, only the \u201cPlace 1 yellow or purple Digimon card from your trash on top of your security stack face down\u201d part of the effect activates. The part of the effect that reads, \u201cyou may search your security stack for 1 level 5 or lower Digimon card and play it without paying its memory cost\u201d only activates when DNA digivolving. \n\u201cThen, shuffle your security stack\u201d activates no matter what kind of digivolution you perform."
            }, {
                "date": "2024-03-28",
                "question": "Does this card's [All Turns] effect also activate when the [Security] effect of one of my Security Digimon plays it into my battle area?",
                "answer": "Yes, it does."
            }, {
                "date": "2024-03-28",
                "question": "Does this card's [All Turns] effect activate when [BT1-089 Mimi Tachikawa]'s effect moves a Digimon from my breeding area to my battle area?",
                "answer": "No, moving a Digimon from your breeding area doesn't count as playing it, so the effect doesn't activate."
            }, {
                "date": "2024-03-28",
                "question": "My level 4 Digimon was played by an effect, then this card's [All Turns] effect and another effect triggered simultaneously. I activated the other effect, then the level of my Digimon that was played by an effect increased from 4 to 5. \nIf I then activate this card's [All Turns] effect, what levels of Digimon can I delete?Jul. 4, 2025 Updated",
                "answer": "Level 4 or lower. \nIf the same reference to a \"played\" trigger condition being performed is made for an effect when it has a \"when X is played\" trigger condition, the state when the effect has triggered will be referenced. \nIn this case, your Digimon was level 4 when this card's [All Turns] effect triggered, therefore you can delete a level 4 or lower Digimon."
            }, {
                "date": "2024-03-28",
                "question": "My level 4 Digimon was played by an effect, then this card's [All Turns] effect and another effect triggered simultaneously. I activated the other effect, then my Digimon that was played by an effect was removed from the battle area. \nIf I then activate this card's [All Turns] effect, can I delete an opponent's Digimon?Jul. 4, 2025 Updated",
                "answer": "Yes, you can delete it. \nIf the same reference to a \"played\" trigger condition being performed is made for an effect when it has a \"when X is played\" trigger condition, the state when the effect has triggered will be referenced. \nIn this case, your Digimon was level 4 when this card's [All Turns] effect triggered, therefore you can delete a level 4 or lower Digimon."
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            "rarity": "SR",
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                "date": "2025-08-01",
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                "correction": "[When Digivolving] Place 1 yellow or purple Digimon card from your trash on top of your security stack face down. When DNA digivolving, search your security stack, and you may play 1 level 5 or lower Digimon card among it without paying its cost.\n Then, shuffle your security stack."
            },
            "category": "digimon",
            "attribute": "Vaccine",
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            "name": "Mastemon",
            "type": "Angel"
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Refer to the API Documentation.

<heroicc-card>

HTML Web Component

<heroicc-card lang="en" data-card-id="ST10-06_P2">
    <link rel="stylesheet" href="https://assets.heroi.cc/css/components/heroicc-card.css?v=4a563a5" />
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    <picture>
        <img width="430" height="600" loading="lazy" alt="ST10-06 Mastemon · Alternate Art #2" src="https://images.heroi.cc/cards/en/ST10-06_P2.webp" />
    </picture>
    <span class="credit">
        <a href="https://heroi.cc/cards/en/ST10-06_P2">ST10-06 Mastemon<span> · </span>
            <small>
                <em>Alternate Art #2</em>
            </small>
        </a>
        <span> on </span>
        <a href="https://heroi.cc">Heroicc</a>
    </span>
</heroicc-card>

Refer to the documentation for configuration options.

ST10-06 Mastemon · Alternate Art #2ST10-06 Mastemon · Alternate Art #2 on Heroicc