Cecile, Captain of Budehuc

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)
Rejuvination ({ut}: Put a +1/+1 counter on this
creature. Activate this ability only once each turn.)
Cecile can't attack or block alone unless it has
four or more +1/+1 counters.
Partner (You can have two commanders if both have partner.)