Warden of the Third Tree

{u/r}: Warden of the Third Tree becomes a 2/1 Knight with Prowess
{u/r}{u/r}{u/r}: If Warden of the Third Tree has Prowess, it becomes a 4/3 Knight and flying
{u/r}{u/r}{u/r}{u/r}{u/r}{u/r}: If Warden of the Third Tree has Prowess and Flying. it becomes a 7/4 Knight creature with Prowess, Flying, and First Strike