Force dropping items + Auto Cast

I need help with 2 things:

1: How should a trigger be made, so that it drops an item if you allready has an item of that type in your hero slot. The item is undroppable usually but it must be able to remove it anyway, isnt it?

2: Is there anyway to skill edit, so that a spell normally without autocast gets it.

1... Well... There are several ways. The best way is to set the HP to the same of the other items in the same class. Then check the HP when the hero picks up the items, of all items in his inventory and drop one of them it they match....

Regards
D00d-Inside

Autocast spells have conditions. Bloodlust is cast on friendly units if they are attacking, Faerie Fire is cast on all enemy units.
You would need to find a spell similar to what you want and edit it.
What do you want the spell to do?

I want an offesnive spell, havent decided wich one, but something like firebolt, frost nova or chain lightning. Have a really offensive wizard on a map, but for the moment, the only skill being used with these wizards are mana shield, since its way to complicated to activate all other spells one by one...