Mastemon
- Card Number
- BT23-102
- Rarity
- SEC
- Category
- Digimon
- Level
- 6
- Block Icon
- 05
- Supplemental Rarity
- ★
- Alternative Art #1
- 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








