Doumon

Card Number
EX4-028
Rarity
U
Category
Digimon
Level
5
Block Icon
02
Colour
Yellow Blue
Play Cost
7
DP
7000
Form
Ultimate
Attribute
Data
Type
Wizard
Digivolution Requirements
Digivolve Cost
4
Colour
Yellow Blue
Level
4
Category
Digimon
Effect

Digivolve 3 from [Kyubimon]

On PlayWhen Digivolving Return 1 of your opponent's Digimon with 6000 DP or less to its owner's hand.

Rule Name: Also treated as [Taomon].

Inherited Effect

Your TurnOnce Per Turn When you use an Option card with a cost of 2 or more, 1 of your opponent's Digimon gets -2000 DP for the turn.

Q&A
Date
Question

If the "when you use an Option card" effect triggers, what is the timing when it can activate?

Answer

It can be activated after activating the used Option card's [Main] effect.

Date
Question

What does this card's ⟨Rule⟩ mean, exactly?

(*This card's "The name of this card/Digimon is also treated as [Taomon]" has been changed to " ⟨Rule⟩ Name: Also treated as [Taomon].")Sep. 13, 2024 Updated

Answer

This is a special rule for this card that always treats it as if it also has the [Taomon] name.

Date
Question

Does the "when you use an Option card" effect trigger if an Option card's effect activates by a method other than using the card?

Answer

No, it doesn't trigger.

If an Option card's effect activates without using it, such as activation by a [Security] effect or <Delay>, the "when you use an Option card" effect doesn't trigger.

Date
Question

An Option card's use cost is 1 or less when used from the hand due to an effect such as BT2-099 [Glorious Burst] or BT8-097 [Crimson Blaze]'s 1st effect.

When such a card is used, does this card's "when you use an Option card with a use cost of 2 or more" effect trigger?

Answer

No, it doesn't trigger.

If a card's cost itself is reduced when it's used from the hand, it's considered to be using an Option card with a use cost after the reduction is applied. Therefore, the "when you use an Option card with a use cost of 2 or more" effect doesn't trigger.

Date
Question

An Option card has an original use cost of 2 or more, and I use it when the cost to pay is reduced to 1 or less.

At such times, does this card's "when you use an Option card with a use cost of 2 or more" effect trigger?

Answer

Yes, it triggers.

If the card's cost to pay is reduced and not the use cost itself, it's considered to be using an Option card with its original value as its use cost. Therefore, the "when you use an Option card with a use cost of 2 or more" effect triggers.

Date
Question

I used an effect to use an Option card with an original use cost of 2 or more without paying the cost.

At such times, does this card's "when you use an Option card with a use cost of 2 or more" effect trigger?

Answer

Yes, it triggers.

Releases
Genre
Booster Pack
Release Name
ALTERNATIVE BEING [EX-04]
Official Product Page
Date
Notes
THEME BOOSTER ALTERNATIVE BEING [EX04]
International Arts

ja EX4-028 テーマブースター オルタナティブビーイング [EX-04]

zh-Hans EX4-028 GREAT WARRIOR 【BTC-07】

ko EX4-028 테마 부스터 얼터너티브 비잉 [EXK-04]

GET /cards/en/EX4-028

JSON:API

{
    "data": {
        "type": "card",
        "id": "\/cards\/en\/EX4-028",
        "attributes": {
            "level": 5,
            "faqs": [{
                "date": "2025-11-21",
                "question": "If the \"when you use an Option card\" effect triggers, what is the timing when it can activate?",
                "answer": "It can be activated after activating the used Option card's [Main] effect."
            }, {
                "date": "2025-11-21",
                "question": "What does this card's \u27e8Rule\u27e9 mean, exactly? \n(*This card's \"The name of this card\/Digimon is also treated as [Taomon]\" has been changed to \" \u27e8Rule\u27e9 Name: Also treated as [Taomon].\")Sep. 13, 2024 Updated",
                "answer": "This is a special rule for this card that always treats it as if it also has the [Taomon] name."
            }, {
                "date": "2025-11-21",
                "question": "Does the \"when you use an Option card\" effect trigger if an Option card's effect activates by a method other than using the card?",
                "answer": "No, it doesn't trigger. \nIf an Option card's effect activates without using it, such as activation by a [Security] effect or <Delay>, the \"when you use an Option card\" effect doesn't trigger."
            }, {
                "date": "2025-11-21",
                "question": "An Option card's use cost is 1 or less when used from the hand due to an effect such as BT2-099 [Glorious Burst] or BT8-097 [Crimson Blaze]'s 1st effect. \nWhen such a card is used, does this card's \"when you use an Option card with a use cost of 2 or more\" effect trigger?",
                "answer": "No, it doesn't trigger. \nIf a card's cost itself is reduced when it's used from the hand, it's considered to be using an Option card with a use cost after the reduction is applied. Therefore, the \"when you use an Option card with a use cost of 2 or more\" effect doesn't trigger."
            }, {
                "date": "2025-11-21",
                "question": "An Option card has an original use cost of 2 or more, and I use it when the cost to pay is reduced to 1 or less. \nAt such times, does this card's \"when you use an Option card with a use cost of 2 or more\" effect trigger?",
                "answer": "Yes, it triggers. \nIf the card's cost to pay is reduced and not the use cost itself, it's considered to be using an Option card with its original value as its use cost. Therefore, the \"when you use an Option card with a use cost of 2 or more\" effect triggers."
            }, {
                "date": "2025-11-21",
                "question": "I used an effect to use an Option card with an original use cost of 2 or more without paying the cost. \nAt such times, does this card's \"when you use an Option card with a use cost of 2 or more\" effect trigger?",
                "answer": "Yes, it triggers."
            }],
            "digivolution-requirements": [{
                "level": 4,
                "category": "digimon",
                "color": ["yellow"],
                "cost": 4
            }, {
                "level": 4,
                "category": "digimon",
                "color": ["blue"],
                "cost": 4
            }],
            "language": "en",
            "inherited-effect": "[Your Turn][Once Per Turn] When you use an Option card with a cost of 2 or more, 1 of your opponent's Digimon gets -2000 DP for the turn.",
            "dp": 7000,
            "notes": "THEME BOOSTER ALTERNATIVE BEING [EX04]",
            "parallel-id": 0,
            "image": "https:\/\/images.heroi.cc\/cards\/en\/EX4-028.webp",
            "play-cost": 7,
            "form": "Ultimate",
            "effect": "[Digivolve] 3 from [Kyubimon]\n [On Play][When Digivolving] Return 1 of your opponent's Digimon with 6000 DP or less to its owner's hand.\n\u27e8Rule\u27e9 Name: Also treated as [Taomon].",
            "rarity": "U",
            "category": "digimon",
            "attribute": "Data",
            "block-icon": 2,
            "color": ["yellow", "blue"],
            "number": "EX4-028",
            "name": "Doumon",
            "type": "Wizard"
        },
        "relationships": {
            "international-arts": {
                "data": [{
                    "type": "card",
                    "id": "\/cards\/ja\/EX4-028"
                }, {
                    "type": "card",
                    "id": "\/cards\/ko\/EX4-028"
                }, {
                    "type": "card",
                    "id": "\/cards\/zh-Hans\/EX4-028"
                }]
            },
            "releases": {
                "data": [{
                    "type": "release",
                    "id": "\/releases\/en\/ex-04"
                }]
            }
        }
    },
    "included": [{
        "type": "card",
        "id": "\/cards\/ja\/EX4-028",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/ja\/EX4-028"
        },
        "meta": {
            "notes": "\u30c6\u30fc\u30de\u30d6\u30fc\u30b9\u30bf\u30fc \u30aa\u30eb\u30bf\u30ca\u30c6\u30a3\u30d6\u30d3\u30fc\u30a4\u30f3\u30b0 [EX-04]"
        }
    }, {
        "type": "card",
        "id": "\/cards\/ko\/EX4-028",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/ko\/EX4-028"
        },
        "meta": {
            "notes": "\ud14c\ub9c8 \ubd80\uc2a4\ud130 \uc5bc\ud130\ub108\ud2f0\ube0c \ube44\uc789 [EXK-04]"
        }
    }, {
        "type": "card",
        "id": "\/cards\/zh-Hans\/EX4-028",
        "links": {
            "self": "https:\/\/api.heroi.cc\/cards\/zh-Hans\/EX4-028"
        }
    }, {
        "type": "release",
        "id": "\/releases\/en\/ex-04",
        "links": {
            "self": "https:\/\/api.heroi.cc\/releases\/en\/ex-04"
        },
        "meta": {
            "name": "ALTERNATIVE BEING [EX-04]"
        }
    }],
    "links": {
        "self": "https:\/\/api.heroi.cc\/cards\/en\/EX4-028"
    }
}

Refer to the API Documentation.

<heroicc-card>

HTML Web Component

<heroicc-card lang="en" data-card-id="EX4-028">
    <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="EX4-028 Doumon" src="https://images.heroi.cc/cards/en/EX4-028.webp" />
    </picture>
    <span class="credit">
        <a href="https://heroi.cc/cards/en/EX4-028">EX4-028 Doumon</a>
        <span> on </span>
        <a href="https://heroi.cc">Heroicc</a>
    </span>
</heroicc-card>

Refer to the documentation for configuration options.

EX4-028 DoumonEX4-028 Doumon on Heroicc