Mastemon

Card Number
BT23-102
Rarity
SEC
Category
Digimon
Level
6
Block Icon
05
Supplemental Rarity
★ ★
Alternative Art #2
Colour
Yellow Purple
Play Cost
13
DP
13000
Form
Mega
Attribute
Vaccine
Type
Angel/CS
Digivolution Requirements
Digivolve Cost
5
Colour
Purple
Level
5
Category
Digimon
Effect

Digivolve Lv.5 w/[CS] trait: Cost 5

DNA DigivolveYellowLv.5 +PurpleLv.5: Cost 0

Barrier Partition ([Angewomon] & [LadyDevimon])

When Digivolving You may play 1 level 5 or lower yellow or purple card from your hand or trash without paying the cost. Then, if this Digimon's stack has 2 or more same-level cards, trash the top cards of both players' security stacks so that they have 3 cards left.

All Turns Once Per Turn When security stacks are removed from, you may place 1 Digimon as the bottom security card.

Q&A
Date
Question

What order do a [Security] effect, "when [...] performs a security check" effect, and "when a card is removed from [...] security stack" effect activate when they trigger simultaneously upon a security check?

Answer

[Security] effects take precedence for activation.

Upon a security check, a [Security] effect will immediately activate without pending activation.

For other triggered effects, the turn player activates their effects first.

Date
Question

Can I use this card's [All Turns] effect to place either my Digimon or my opponent's Digimon as the bottom security card?

Answer

Yes, you can.

Date
Question

Does this card's <Partition> also trigger when this card's [All Turns] effect is used to place this card itself as the bottom security card?

Answer

No, it doesn't trigger.

Releases
Genre
Booster Pack
Release Name
HACKERS' SLUMBER [BT-23]
Official Product Page
Date
Notes
BOOSTER HACKERS' SLUMBER [BT-23]
Alternate Arts

en BT23-102 BOOSTER HACKERS' SLUMBER [BT-23]

en BT23-102 P1 BOOSTER HACKERS' SLUMBER [BT-23]

International Arts

ja BT23-102 HACKERS' SLUMBER [BT-23]

ja BT23-102 P1 HACKERS' SLUMBER [BT-23]

ja BT23-102 P2 ★ ★ HACKERS' SLUMBER [BT-23]

zh-Hans BT23-102 HACKER'S SLUMBER【BT-23】

zh-Hans BT23-102 P1 HACKER'S SLUMBER【BT-23】

zh-Hans BT23-102 P2 ★ ★ HACKER'S SLUMBER【BT-23】

GET /cards/en/BT23-102_P2

JSON:API

{
    "data": {
        "type": "card",
        "id": "\/cards\/en\/BT23-102_P2",
        "attributes": {
            "level": 6,
            "faqs": [{
                "date": "2025-10-03",
                "question": "What order do a [Security] effect, \"when [...] performs a security check\" effect, and \"when a card is removed from [...] security stack\" effect activate when they trigger simultaneously upon a security check?",
                "answer": "[Security] effects take precedence for activation. \nUpon a security check, a [Security] effect will immediately activate without pending activation. \nFor other triggered effects, the turn player activates their effects first."
            }, {
                "date": "2025-10-03",
                "question": "Can I use this card's [All Turns] effect to place either my Digimon or my opponent's Digimon as the bottom security card?",
                "answer": "Yes, you can."
            }, {
                "date": "2025-10-03",
                "question": "Does this card's <Partition> also trigger when this card's [All Turns] effect is used to place this card itself as the bottom security card?",
                "answer": "No, it doesn't trigger."
            }],
            "digivolution-requirements": [{
                "level": 5,
                "category": "digimon",
                "color": ["purple"],
                "cost": 5
            }],
            "language": "en",
            "dp": 13000,
            "notes": "BOOSTER HACKERS' SLUMBER [BT-23]",
            "parallel-id": 2,
            "supplemental-rarity": {
                "stars": 2
            },
            "image": "https:\/\/images.heroi.cc\/cards\/en\/BT23-102_P2.webp",
            "play-cost": 13,
            "form": "Mega",
            "effect": "[Digivolve] Lv.5 w\/[CS] trait: Cost 5\n[DNA Digivolve] Yellow Lv.5 + purple Lv.5: Cost 0\n\uff1cBarrier\uff1e \uff1cPartition ([Angewomon] & [LadyDevimon])\uff1e\n[When Digivolving] You may play 1 level 5 or lower yellow or purple card from your hand or trash without paying the cost. Then, if this Digimon's stack has 2 or more same-level cards, trash the top cards of both players' security stacks so that they have 3 cards left.\n[All Turns] [Once Per Turn] When security stacks are removed from, you may place 1 Digimon as the bottom security card.",
            "rarity": "SEC",
            "category": "digimon",
            "attribute": "Vaccine",
            "block-icon": 5,
            "color": ["yellow", "purple"],
            "number": "BT23-102",
            "name": "Mastemon",
            "type": "Angel\/CS"
        },
        "relationships": {
            "alternate-arts": {
                "data": [{
                    "type": "card",
                    "id": "\/cards\/en\/BT23-102"
                }, {
                    "type": "card",
                    "id": "\/cards\/en\/BT23-102_P1"
                }]
            },
            "international-arts": {
                "data": [{
                    "type": "card",
                    "id": "\/cards\/ja\/BT23-102"
                }, {
                    "type": "card",
                    "id": "\/cards\/ja\/BT23-102_P1"
                }, {
                    "type": "card",
                    "id": "\/cards\/ja\/BT23-102_P2"
                }, {
                    "type": "card",
                    "id": "\/cards\/zh-Hans\/BT23-102"
                }, {
                    "type": "card",
                    "id": "\/cards\/zh-Hans\/BT23-102_P1"
                }, {
                    "type": "card",
                    "id": "\/cards\/zh-Hans\/BT23-102_P2"
                }]
            },
            "releases": {
                "data": [{
                    "type": "release",
                    "id": "\/releases\/en\/bt-23"
                }]
            }
        }
    },
    "included": [{
        "type": "card",
        "id": "\/cards\/en\/BT23-102",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/en\/BT23-102"
        },
        "meta": {
            "notes": "BOOSTER HACKERS' SLUMBER [BT-23]"
        }
    }, {
        "type": "card",
        "id": "\/cards\/en\/BT23-102_P1",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/en\/BT23-102_P1"
        },
        "meta": {
            "notes": "BOOSTER HACKERS' SLUMBER [BT-23]"
        }
    }, {
        "type": "card",
        "id": "\/cards\/ja\/BT23-102",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/ja\/BT23-102"
        },
        "meta": {
            "notes": "HACKERS' SLUMBER [BT-23]"
        }
    }, {
        "type": "card",
        "id": "\/cards\/ja\/BT23-102_P1",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/ja\/BT23-102_P1"
        },
        "meta": {
            "notes": "HACKERS' SLUMBER [BT-23]"
        }
    }, {
        "type": "card",
        "id": "\/cards\/ja\/BT23-102_P2",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/ja\/BT23-102_P2"
        },
        "meta": {
            "notes": "HACKERS' SLUMBER [BT-23]"
        }
    }, {
        "type": "card",
        "id": "\/cards\/zh-Hans\/BT23-102",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/zh-Hans\/BT23-102"
        }
    }, {
        "type": "card",
        "id": "\/cards\/zh-Hans\/BT23-102_P1",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/zh-Hans\/BT23-102_P1"
        }
    }, {
        "type": "card",
        "id": "\/cards\/zh-Hans\/BT23-102_P2",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/zh-Hans\/BT23-102_P2"
        }
    }, {
        "type": "release",
        "id": "\/releases\/en\/bt-23",
        "links": {
            "self": "https:\/\/api.heroi.cc\/releases\/en\/bt-23"
        },
        "meta": {
            "name": "HACKERS' SLUMBER [BT-23]"
        }
    }],
    "links": {
        "self": "https:\/\/api.heroi.cc\/cards\/en\/BT23-102_P2"
    }
}

Refer to the API Documentation.

<heroicc-card>

HTML Web Component

<heroicc-card lang="en" data-card-id="BT23-102_P2">
    <link rel="stylesheet" href="https://assets.heroi.cc/css/components/heroicc-card.css?v=4a563a5" />
    <script type="module" src="https://assets.heroi.cc/js/heroicc-card.js?v=4a563a5"></script>
    <picture>
        <img width="430" height="600" loading="lazy" alt="BT23-102 Mastemon · Alternate Art #2" src="https://images.heroi.cc/cards/en/BT23-102_P2.webp" />
    </picture>
    <span class="credit">
        <a href="https://heroi.cc/cards/en/BT23-102_P2">BT23-102 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.

BT23-102 Mastemon · Alternate Art #2BT23-102 Mastemon · Alternate Art #2 on Heroicc