what can i do with the gold?

[Dragonjoker]

maby i am going bilnd but after neraly 2h i dont have any idea what to do with the gold
can someone tell me pls.

[Paraakie]

There is a trader where you can get specific cards with gold+other currency,
but make sure to hoard up a lot
I heard some cards cost over 100k gold

[Testa]

You unlock a trader at stage 7.

[Ice Bear]

You can use your gold in trading with the card trader outside the shop.