Had this really really dumb idea for this kind of hero where the hero would trade stocks ingame using their souls and/or another currency that can be convertted with souls.
it would open up a UI and let the player invest, trade, short, long, sell.
(trading ingame stocks, trading souls into money, trading money to souls, trading souls to gold, trading money to gold, etc)
Since it would be affecting the gun industry - it may affect all player's item cost, making it cheaper or expensive.
or you could crash an industry which would lead to players temporarily unable to buy gun items.
or inflate the entire shop so everything gets more expensive.
or shrink-flation where he reduces the spirit of all items by -2.
or reduces the worth of items that affects all players investment.
The ability could passively provide base souls per minute like (lorewise) the player already has "passive income" from previously owned assets/capital
The hero would be able to get their ultimate very fast and can get a lot of souls - or spend/lose a lot of souls.