Item Idea for a stacking mechanic.
The Arcane-Hextec Scepter- each minion kill and pet is 1 stack, kills/assists/large minion and monster is 3. at 100 stacks you get a 20% increase in the stat you chose to improve (so if you picked cull and cloth armor, at 100 stacks you get 20% more armor in total). can have multiple build paths for hp, ad, armor, mr, ap, movement, and mana/energy. Cull+ raw stat + combine cost to equal a total cost of 1500. the movement speed and mana/energy would not be changed until the stacking was complete. can buy multiple rods, but only stack one at a time. completing the item gives a permanent buff of 20% in the stat complete, even if the item is sold.