Requirements 1 Pr-k monster and a copy of Poly
Combo:
Ns Pr-k 1, Ls Meow Mu, Float Pr-k 2, Ls Doodle doo, Float Pr-k 3 and Place, Activate Place, Search Pr-k 4, Activate poly, Fuse 4/3, Fs Rocket Ride, float Pr-k 5/6, Activate Rocket Ride, SS Pr-k 4/3, Ls Accesscode, Ls Verte, Activate verte summon Dragoon
And I think this is legal