Spellthief's Jungle is actually going to be a problem
It is an actual example of secret tech hidden OP.
's Tribute passive has a cooldown when killing lane minions. This is in place to prevent solo laners from taking it to get loads of free gold from trading and farming at the same time.
But this cooldown isn't in place for jungle camps. So famr-gank-farm champions can take the item to massively increase their gold income, getting a support's bonus gold while simultaniously being the fastest role to get to 1000 gold because of the jungle's camp cooldowns meaning they need to provide more gold each clear.
This needs to change. It isn't super popular now, but it's actually completely busted, and once more players start catching on, junglers are going to be controlling the game even more than they can already with a good gank. On top of those lane-changing ganks, the bonus gold is going to mean insanely fast power spikes and junglers carrying games because of their abuse of a support item.
to outduel the enemy jungler, jungling faster, and doing more damage during ganks also sustaining more since afaik you heal a portion of the damage dealt in the jungle