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Season 10Sep 2026 ends in
โ˜… Legendary Front Line

Headless Jack

Legendary โ€ข Front Line

Can be obtained from Harvest Pots, Recruitment, and the U-Pick Farm.

Joins the card pool at 2,400 ๐Ÿ† on the Trophy Road.

Headless Jack
Base Attack (Lv. 1)
10
Attack Speed
Common2s
Attack target
Front Line
Deploy Cost
5Sun
Rarity
Legendary

โšก Skill

Headless Jack skill icon

Aura: This Minion gains ATK +5 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +10 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +20 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +60 for every 10% HP the Captain is missing.

Lv 1โ€“7
Rumble Chess (Lv 7)
Aura: This Minion gains ATK +5 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +10 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +20 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +60 for every 10% HP the Captain is missing.
Lv 8Aura: This Minion gains ATK +6 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +12 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +24 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +72 for every 10% HP the Captain is missing.
Lv 9Aura: This Minion gains ATK +7 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +14 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +28 for every 10% HP the Captain is missing.Aura: This Minion gains ATK +84 for every 10% HP the Captain is missing.
Lv 10Aura: This Minion gains ATK +7 and ATK SPD +3% for every 10% HP the Captain is missing.Aura: This Minion gains ATK +14 and ATK SPD +3% for every 10% HP the Captain is missing.Aura: This Minion gains ATK +28 and ATK SPD +3% for every 10% HP the Captain is missing.Aura: This Minion gains ATK +84 and ATK SPD +3% for every 10% HP the Captain is missing.
Lv 11Aura: This Minion gains ATK +9 and ATK SPD +3% for every 10% HP the Captain is missing.Aura: This Minion gains ATK +18 and ATK SPD +3% for every 10% HP the Captain is missing.Aura: This Minion gains ATK +36 and ATK SPD +3% for every 10% HP the Captain is missing.Aura: This Minion gains ATK +108 and ATK SPD +3% for every 10% HP the Captain is missing.
Lv 12Aura: This Minion gains ATK +11 and ATK SPD +3% for every 10% HP the Captain is missing.Aura: This Minion gains ATK +22 and ATK SPD +3% for every 10% HP the Captain is missing.Aura: This Minion gains ATK +44 and ATK SPD +3% for every 10% HP the Captain is missing.Aura: This Minion gains ATK +132 and ATK SPD +3% for every 10% HP the Captain is missing.

Drag two Minions of the same type and โ˜… rank onto the same tile on the board to promote them to the next โ˜…; their ATK is added together. Minions go up to 3โ˜… (Merge Minion); only in Rumble Chess do two 3โ˜… Minions merge into a 4โ˜… (Rumble Chess โ€“ 4โ˜… Minions).

Moon Synergy (Rumble Chess Synergy)

Other heroes in this synergy
Synergy bonuses
Synergy PointsEffect
4Enemies lose 4% HP upon entering the field.
8Enemies lose 8% HP upon entering the field.
12Enemies lose 12% HP upon entering the field.
16Enemies lose 18% HP upon entering the field.
20Enemies lose 24% HP upon entering the field.
25Enemies lose 30% HP upon entering the field.
30Enemies lose 38% HP upon entering the field.
35Enemies lose 46% HP upon entering the field.
40Enemies lose 54% HP upon entering the field.
50Enemies lose 65% HP upon entering the field.

๐Ÿ“ˆ Level-Up Costs (Lv 7โ€“12)

Level ATK gained Cards Gold Effect
Level 7 โ€” - - Starting level
Level 8 โ€” ๐Ÿƒ 1 Cards ๐Ÿช™ 2000 Increases the ATK buff from every 10% of missing HP to 6.
Level 9 โ€” ๐Ÿƒ 2 Cards ๐Ÿช™ 4000 Increases the ATK buff from every 10% of missing HP to 7.
Level 10 โ€” ๐Ÿƒ 4 Cards ๐Ÿช™ 7000 Temp increases this Minion's ATK SPD by +3% for every 10% of missing HP.
Level 11 โ€” ๐Ÿƒ 5 Cards ๐Ÿช™ 11000 Increases the ATK buff from every 10% of missing HP to 9.
Level 12 โ€” ๐Ÿƒ 6 Cards ๐Ÿช™ 16000 Increases the ATK buff from every 10% of missing HP to 11.