A simple fix to laners exploiting Smite
Make
automatically purchased and in your inventory at the start of the game - leaving you with whatever gold is left to make your own decisions.
Why? Because no jungler in their right mind will not buy it to start out their game, and no laner in their right mind would buy it to start out their game.
By making it a mandatory purchase at the start, junglers receive no drawbacks, while laners have to go through the first part of the laning with only a worthless item and 75/120 gold.