Kyra, Inquisitive Diplomat

Other Nobles and Peasants you control get +1/+1
Whenever a Peasant or Noble enters the
battlefield under your control, put a +1/+1
counter on Kyra, Inquisitive Diplomat.
When Kyra, Inquisitive Diplomat has 3 or more
+1/+1 counters on it, exile it and then bring it
back to the battlefield transformed.