Ley
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Simply on the second week, for example, you might find a book of fire (if you're VERY lucky), or randomly pick up a scroll.
Well, if you have it, you level up a mage hero, equip them with ifrits, and off you go.
At the same time, let's say a second hero-warrior goes with devils.
Another serious argument for this tactic is hiding ifrits (I once had them located about one and a half moves away from the starting castle!).
Well, since you found the book of fire, it's even easier to find a skilled hero, level him up, and then send him and some ifrits in all four directions from the castle, along with Armageddon...
"Единственное, что можно сказать с уверенностью об удаче - она изменит..."