Art from CurrencyNews.
This one started as an attempt to make a translation card. Turn something into the same thing but different (gods, I am great at explaining). The idea just sort of popped into my head, I guess because transforming cards is to typical but counters I think it hasn’t been done before. In the end translating didn’t fit the flavor as good as changing currencies.
Of course blue is the master at manipulation, and the pricetag goes in the line of Polymorph. This could be used to turn -1/-1 counters into +1/+1 (or vice versa), or mess with time counters from vanishing. Notice it says permanent, not creature — you can deactivate artifacts with charge counters or even kill planeswalkers!