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As long as you have that idea,
nothing will work out for you :)
Or, try to assemble a wizard's deck :D
Yeah, if you can restart with a hat or a book, you can restart with something for mana as well.
As one of the tips for the console, you can use a hero with expert fire and curse. The damage of griffins ranges from 3-6, leaving only 3. It helps me a lot.