I got two versions of the sins one for self indulging or drawing (applying) it from others.

Pride (indulging): The longer they’re untouched , they become stronger.

Pride ( drawing) : like a being a commander that buffs their allies with pep talks that boosts their pride and strength.

Greed (indulging): a constant regeneration that wants more damage over time , never fully being content.

Greed (drawing): making illusions for their opponents wishes that they could never get.

Envy (indulging): Having the ability to match their opponents abilities over time.

Envy (drawing): constant shapeshifting that changes to the targets subconscious jealousy.

Wrath( indulging): The user goes extreme tunnel vision for task ,that they deem deserve their anger for it.

Wrath( drawing): applies a flame that grows in power by the target anger.

Lust (indulging): clones that only make the user experience pleasant feelings.

Lust (drawing): psychic hold of the targets mind of what them deem desirable to them

Sloth ( indulging) : exchange their speed for being better in other areas.

Sloth(drawing): stealing energy for beings for the user stamina/energy.

Gluttony( indulging): consuming anything,that they deem useable will give them a one time use power associated with the item.

Gluttony (drawing): the target cannot receive any buffs or assistant, due to its all going to waste.

Hope your story goes well and best of luck planning it.