Goreclaw, Passionate Train Fan

Vehicle spells you cast with power 5 or greater
cost {2} less to cast.
Whenever you attack, if Goreclaw, Passionate
Train Fan is tapped, each Vehicle you control
crewed by a non-Human creature gains +1/+1
and trample until end of turn. Then draw a card
if you control the Vehicle creature with the
highest power or tied for the highest power.