Warcraft Magic glitch:
This trick only works with humans. Whether or not it works with the PC version I'm not sure. Here's how it works.
1. Activate the message bar by hitting return.
2. Type in the master cheat code, corwin of amber. Hit return.
3. Then hit return again and type in the magic cheat code, eye of newt. Hit return.
4. Your sorcerers now have unlimited mana with which to cast spells.
5. Now when you summon a fire storm it will rain fire indefinately until you tell him to stop.
6. This glitch doesn't work with the warlock's poison clouds.