Balance of Urisk

You touch a pile of coins, which dissolve into a bubbling pool of molten metal, while concentrating on a single type of coin. Anything that touches the pool takes 4d6 fire damage. The pool is colored based on a swirling mixture of the colors of the coins that were melted down as they shift towards the color of the output coin. Once the pool finalizes on the color a pile of coins starts to emerge sucking up the pool. Any coins that would be left over (the value of which wouldn't be enough to make a whole coin of the chosen value) are lost in the casting of this. For example 10 copper could be converted to 1 silver piece, 15 copper would still only create a single silver.