Lv. 80 Secondary Weapon Implement
The Debt Collector
Hey, Jack set
A copy arrives at its level rather than being upgraded into it, so this walks the five levels a piece drops at.
ATK 88 
DEF 165 
DMG Bonus 7.5% ATK % 6% 
Break Exploit 20 Hey, Jack Set
Hey, Jack
Set effect at 4 pieces
Stun Buildup Bonus +25% Increases the holder's Stun Buildup Bonus by 25%. When the character's Stun Buildup Bonus exceeds 100%, landing a Basic Attack on an enemy or performing a Perfect Dodge grants 1 or 3 stacks of All In respectively. Each stack of All In increases their Charged DMG by 3% for 8s, stacking up to 3 times.
The other 3 pieces that complete the set:
Stats are fixed: a second copy of this piece at the same rarity and level is identical to the one you are wearing. The rollable substats in Silver Palace sit on your Epiphany.
Set Description
Jack, oh Jack, you're such a knave.
A scoundrel who's left me looking the fool.
And I suppose I am, for I fall for your games.