Forum:Dewlore+mistvalley thunder bird

If i could send any number oc cards on the fiel to boost dewloren, cant i just send T bird to my hand chain his effect. special summon him and chain dewlorens effect again on the same turn for a never ending boos to dewloren,since tecknically its still my main phase im just activating one effect while another is still being executed. ist saiys once per turn but im still using his effect once (in my mp) just with the same card.