Random Champion concept: Another champ with a mount

VAGUE NUMBERS AND DESCRIPTION USED:

Backstory: Zyrin(just using my ign) hunter that adopts some big animal (best story idea)

Basic attack: A rifle medium range, !extra! when in close range, your mount will attack (because Zyrin can't accuratly shoot close up?)

Mount: something big like a Rhino, elephant size.

Role: bruiser ish

Passive: Every 3-5 minutes(or whatever is balanced) feed your mount to grow its size by a Teemo or half a Teemo. This will also have some HP gain or tenacity gain, After 20 minutes the size change is smaller, like a quarter of a Teemo and caps at 40 minutes

Q: Zyrin takes a second to line up a shot dealing AD dmg, decent damage. This is a channeling and target/skillshot ability

W: Speed boost and gains a tenacity

E: Lay down a bear trap that will damage and snare the enemy AD DMG

R: Zyrin drops off his mount and sends his mount charging into the enemy, leaving it with X amount of HP (1.5k about) maybe like 1.5 Corki's Valkyrie range AD DMG The W will apply to the Mount even when dismounted Zyrin rifle range is increased( double?) I just want a champion that will dismount his/her mount and it turns into its own summon.