New Gangplank needs a lot of silver serpents to get his upgrades, I have a small buff to help.
What if for every minion/monster/turret/champion killed by Gangplank, he gets 1 silver serpent?
So if he has 100 cs, he gets 100 silver serpents?
If I have to be honest, he needs to get 1500 bonus gold from his Q for all upgrades(though only 2 are good, raise morale is balls) and testing in a game as a super passive GP set up, that is going to take 20-30 minutes if you're explicitly focused on Q farming, faster if you have a ton of CDR, but not by much.
Either this could be a possibility, or his ult can have a lower silver serpent cost, I'm not sure, this is just an idea.