Symbiocycle

First strike
Whenever Symbiocycle becomes crewed by
exactly one creature, put a first strike counter on
that creature. It becomes an artifact in addition
to its other types. If it already has first strike, put
a +1/+1 counter on it instead.
Crew 2 (Tap any number of creatures you control
with total power 2 or greater: This Vehicle becomes an artifact creature until end of turn.)