Mounted Chocobo

Mount 1 (Only one creature can crew this vehicle with power 1 or more. Add the crewing creature's power onto this creature's power.)
For every white mana spent to cast Mounted Chocobo, it gets +1/+0. If two white mana was spent, it also has first strike when crewed.
For every green mana spent to cast Mounted Chocobo, it gets +0/+1. If two green mana was spent, it also has trample when crewed.