Attempt to add new spells and skills.

I.e., if in the types.xml file

after the code:

				<Item>
					<Name>SPELL_EFFECT_FIRST_AID_TENT_PLAGUE</Name>
					<Value>352</Value>
				</Item>

add something like:

				<Item>
					<Name>SPELL_NEW_SAMPLE_SPELL</Name>
					<Value>353</Value>
				</Item>

And of course increase the total number of spells in the .exe - there will be no point?!

The problem is that on the map, for example, you can track whether a hero has a new skill/spell and, depending on that, script the logic of that new skill. But in battle, you won't be able to track the use of a new spell, so there's no way to script the mechanics. However, it will be possible to write +- a new active ability for creatures if you expand their number.