Master summoning stone: It's a summoning stone where you load your standard summoning stone, once loaded when you double click it appears a menu like
Select a summon:
- Celestial 24
- Mercantile 17
- Mysterious 31
- Shining Blade War Horn 4
So you click on the summon and voila...
This way we can reduce storage wasted
The same goes for mini, with miniball, you can show every minipet that is dedicated to your HoM, when you use the miniball appears a list with every ded mini in HOm, and oyu can select anyone to show, this way you can sell or delete the dedicated minis and free some storage space.