Lucky Pennies is an Active Card in Back 4 Blood. It is a Utility Type with Fortune 
Affinity. Although it doesn’t directly affect any player’s stats, it is a good copper economy card to get after Money Grubbers that helps teams buy upgrades and items more easily.
Card Ability
Whenever you or your team loots Copper, you have a 35% chance to find 100% additional Copper.
Use Lucky Pennies for your team build if you find your team starved for Copper to buy upgrades. Also, the player with Lucky Pennies will still receive bonus Copper if a teammate loots the Copper piles.
How to Get Lucky Pennies
Players can obtain Lucky Pennies as a reward by defending the jukebox in Bar Room Blitz without it breaking.
This accomplishment can be achieved on any difficulty.
Card Synergies
Lucky Pennies in Back 4 Blood is one of the few cards that increase Copper gain. As mentioned before, having copper to buy upgrades and accessories is an important strategy for completing any act. The other Copper gaining cards in Back 4 Blood are:
Money Grubbers – This active card almost always gives more Copper than any other active card. It should be taken before Lucky Pennies if your team needs a lot of copper.
Copper Scavenger – It’s recommended that at least 1 person on the team carry Copper Scavenger to ensure more copper piles spawn and, more importantly, all copper piles are picked up.
Share the Wealth – A team card that gives each player 100 bonus Copper at the start of each level. Its bonus is felt the most on the first level of each act where it can help the team buy more items or team bonuses (with multiple Share the Wealth).
Hazard Pay – Good Copper card that gives 250 bonus Copper to the player at the start of each level. Similar to Share the Wealth but only gives Copper to the player with the active card.
Compound Interest – The least useful card with 5% bonus Copper of each player’s total.