Shifting Balance Transfers to Reduce Interest

[Jay P.]

I have a Navy Federal Credit Union and Pentagon Federal Credit Union credit card.  

They both seem to run the same yearly reocurring balance transfer promotions from 0-4.99% interest with no balance transfer fees for 12 months.  

I chase the lower balance transfer interest back and forth to save on my balances.  

Does anyone know other credit cards similar to these ones [that all have] 1) no balance transfer fees 2) a frequently reoccurring balance transfer promotion? And 3) zero to low balance transfer interest rate? 

Thanks!