Gennai's House

Card Number
ST21-15
Rarity
U
Category
Option
Block Icon
05
Colour
White
Use Cost
2
Type
ADVENTURE
Effect

While you have no face-up [Gennai's House] security cards, you can ignore this card's color requirements.

Security Your Turn All of your level 3 or higher Digimon get +3000 DP.

Main Add your bottom security card to the hand. Then, place this card face up as the bottom security card.

Security Effect

Security You may play 1 level 3 Digimon card from your trash without paying the cost.

Q&A
Date
Question

What happens to cards placed face up in the security stack by effects?

Answer

They become face-up security cards that remain revealed.

Other than rules that specify face-up security cards, the rules apply in the same manner as standard security cards.

Date
Question

What happens upon a security check for a security card that is placed face-up?

Answer

The check is performed with the card left revealed.

Other than rules for cards left revealed, the rules apply in the same manner as standard security checks.

Date
Question

Does a card's [Security] effect trigger upon a security check with that card placed face-up?

Answer

Yes, it triggers.

Date
Question

What happens if I shuffle a security stack that includes security cards placed face-up?

Answer

Any face-up cards are placed face down, then you shuffle the cards.

After shuffling, all cards are left face-down.

Date
Question

Can I also activate this card's [Main] effect when I have 0 cards in my security stack?Jun. 25, 2025 Updated

Answer

Yes, you can.

In such cases, you can't add a card from your security stack to your hand, therefore you only place this card in your security stack.

Releases
Genre
Starter Deck
Release Name
HERO OF HOPE [ST-21]
Official Product Page
Date
Notes
Starter Deck HERO OF HOPE [ST-21]
International Arts

ja ST21-15 スタートデッキ HERO OF HOPE [ST-21]

zh-Hans ST21-15 希望英雄【ST-21】

GET /cards/en/ST21-15

JSON:API

{
    "data": {
        "type": "card",
        "id": "\/cards\/en\/ST21-15",
        "attributes": {
            "faqs": [{
                "date": "2025-04-04",
                "question": "What happens to cards placed face up in the security stack by effects?",
                "answer": "They become face-up security cards that remain revealed. \nOther than rules that specify face-up security cards, the rules apply in the same manner as standard security cards."
            }, {
                "date": "2025-04-04",
                "question": "What happens upon a security check for a security card that is placed face-up?",
                "answer": "The check is performed with the card left revealed. \nOther than rules for cards left revealed, the rules apply in the same manner as standard security checks."
            }, {
                "date": "2025-04-04",
                "question": "Does a card's [Security] effect trigger upon a security check with that card placed face-up?",
                "answer": "Yes, it triggers."
            }, {
                "date": "2025-04-04",
                "question": "What happens if I shuffle a security stack that includes security cards placed face-up?",
                "answer": "Any face-up cards are placed face down, then you shuffle the cards. \nAfter shuffling, all cards are left face-down."
            }, {
                "date": "2025-04-04",
                "question": "Can I also activate this card's [Main] effect when I have 0 cards in my security stack?Jun. 25, 2025 Updated",
                "answer": "Yes, you can. \nIn such cases, you can't add a card from your security stack to your hand, therefore you only place this card in your security stack."
            }],
            "language": "en",
            "notes": "Starter Deck HERO OF HOPE [ST-21]",
            "use-cost": 2,
            "parallel-id": 0,
            "image": "https:\/\/images.heroi.cc\/cards\/en\/ST21-15.webp",
            "security-effect": "[Security] You may play 1 level 3 Digimon card from your trash without paying the cost.",
            "effect": "While you have no face-up [Gennai's House] security cards, you can ignore this card's color requirements.\n[Security] [Your Turn] All of your level 3 or higher Digimon get +3000 DP.\n[Main] Add your bottom security card to the hand. Then, place this card face up as the bottom security card.",
            "rarity": "U",
            "category": "option",
            "block-icon": 5,
            "color": ["white"],
            "number": "ST21-15",
            "name": "Gennai's House",
            "type": "ADVENTURE"
        },
        "relationships": {
            "international-arts": {
                "data": [{
                    "type": "card",
                    "id": "\/cards\/ja\/ST21-15"
                }, {
                    "type": "card",
                    "id": "\/cards\/zh-Hans\/ST21-15"
                }]
            },
            "releases": {
                "data": [{
                    "type": "release",
                    "id": "\/releases\/en\/st-21"
                }]
            }
        }
    },
    "included": [{
        "type": "card",
        "id": "\/cards\/ja\/ST21-15",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/ja\/ST21-15"
        },
        "meta": {
            "notes": "\u30b9\u30bf\u30fc\u30c8\u30c7\u30c3\u30ad HERO OF HOPE [ST-21]"
        }
    }, {
        "type": "card",
        "id": "\/cards\/zh-Hans\/ST21-15",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/zh-Hans\/ST21-15"
        }
    }, {
        "type": "release",
        "id": "\/releases\/en\/st-21",
        "links": {
            "self": "https:\/\/api.heroi.cc\/releases\/en\/st-21"
        },
        "meta": {
            "name": "HERO OF HOPE [ST-21]"
        }
    }],
    "links": {
        "self": "https:\/\/api.heroi.cc\/cards\/en\/ST21-15"
    }
}

Refer to the API Documentation.

<heroicc-card>

HTML Web Component

<heroicc-card lang="en" data-card-id="ST21-15">
    <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="ST21-15 Gennai&#x27;s House" src="https://images.heroi.cc/cards/en/ST21-15.webp" />
    </picture>
    <span class="credit">
        <a href="https://heroi.cc/cards/en/ST21-15">ST21-15 Gennai&#x27;s House</a>
        <span> on </span>
        <a href="https://heroi.cc">Heroicc</a>
    </span>
</heroicc-card>

Refer to the documentation for configuration options.

ST21-15 Gennai's HouseST21-15 Gennai's House on Heroicc