Although you cannot play Spy Cards Online without JavaScript enabled, you can still browse the available modes as well as the cards for each mode.
Undertale Boss Mode (v74)
by Dccd
Whoa-oh-oh-oh-oh-oh-oh-oh-oh-oh Story of UNDERTALE!
Cards
Determination7
- Defy Death once with 1 HP When this Effect activates: Setup (ATK+5)
- Passive
- Unless HP (1): If Ddeterrminationn Token: Summon Determination Token
- Unless HP (1): Setup (True Numb Own Card Ddeterrminationn Token (1))
- Unless Dddettterrmminnnationn Token: Summon Dddettterrmminnnationn Token
- Unless HP (1): Setup (ATK+5)
- Null
Justice6
- Per 2 ATK: Pierce (1)
- Passive
- If ATK (2*): Pierce (1)
- Unless Justice Token: Summon Justice Token
- VS Flowey: On Win: Damage Opponent 1 (ignoring modifiers)
- VS Flowey: Lifesteal (5)
- Null
Perseverance4
- On Lose: Setup (DEF+2)
- Passive
- Unless Perser Token: Summon Perser Token
- VS Flowey: On Win: Damage Opponent 1 (ignoring modifiers)
- VS Flowey: Lifesteal (5)
- Null
Kindness5
- On Tie: Heal 1 per difference between DEF and Opponent's ATK
- Passive
- If DEF minus opponent's ATK (1*): On Tie: Heal 1
- VS Flowey: On Win: Damage Opponent 1 (ignoring modifiers)
- VS Flowey: Lifesteal (5)
- Null
Bravery2
- On Win: ATK+5
- Passive
- Unless Brave Token: Summon Brave Token
- VS Flowey: On Win: Damage Opponent 1 (ignoring modifiers)
- VS Flowey: Lifesteal (5)
- Null
Patience1
- Setup Effects will not progress naturally If Mini-Boss: Setup Effects happen instantly
- Passive
- Unless Mini-Boss (1): Delay Non-Token Setup Effects By 1 Round
- If Mini-Boss (1): Advance Non-Token Setup Effects By 99 Rounds
- Unless Patience Token: Summon Patience Token
- VS Flowey: On Win: Damage Opponent 1 (ignoring modifiers)
- VS Flowey: Lifesteal (5)
- Null
Monster0
- Passive
- Unless Monster Token: Summon Monster Token
- Null
Toy Knife3
- ATK: 2
- Setup (ATK+1)
- Setup (2 rounds) (ATK+1)
Tough Glove4
- ATK: 4
- On Win: ATK+1
Ballet Shoes4
- ATK: 2
- Per any in Hand: ATK+1
Torn Notebook2
- On Lose: ATK-4 for opponent
Burnt Pan3
- DEF: 3
- On Tie: Heal 5
Empty Gun2
- ATK: 2
- Pierce (3)
Butterscotch Pie2
- Heal 15 (ignoring modifiers)
- Exile Self
Froggit1
- 1
Whimsun1
- Draw 1 Card (ignoring limit)
Moldsmal2
- 2
Vegetoid1
- Lifesteal (7)
Migosp3
- 3
Loox2
- Setup (ATK+1)
Snowdrake2
- Numb (1)
Chilldrake4
- 4
Ice Cap2
- On Tie: If DEF (1*): Damage Opponent 1
Lesser Dog4
- 2
- 2
Jerry10
- 10
Gyftrot3
- DEF: 2
- ATK: 1
Greater Dog6
- 3
- 3
Aaron5
- 5
Woshua3
- 3
Shyren5
- DEF: 3
- Lifesteal (3)
Temmie3
- Unity (1, Attacker or Effect or Mini-Boss)
Moldbygg4
- 4
Vulkin1
- DEF: 1
- Prevent Numb Enemy (1)
Tsundereplane4
- ATK: 6
- Numb Own Enemy (1)
Pyrope2
- Numb Enemy (1)
- Numb Own Enemy (1)
Madjick2
- Coin (4): ATK+1
Knight Knight6
- 6
Final Froggit9
- 9
Whimsalot2
- ATK: 1
- Draw 2 Cards (ignoring limit)
Astigmatism2
- Setup (2 rounds) (ATK+1)
Memoryhead-1
- Take 1 Damage
- VS Sans: Take 1 Damage (ignoring modifiers)
Reaper Bird3
- ATK: 1
- Setup (ATK+1)
- Draw 1 Card (ignoring limit)
Endogeny5
- ATK: 5
- DEF: 5
- Take 12 Damage
- VS Sans: Take 12 Damage (ignoring modifiers)
Lemon Bread5
- Numb (1)
- Numb Effect (1)