Пандора
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No, an elf is definitely needed. He's almost the only ranged attacker (if you consider ranged units). And tigers might not even make it and end up as mere cannon fodder. Especially if the opponent has a slowing effect (like Haven), and a general one at that. And the druid, as always, will clearly be too busy to speed up the tigers. He'll either be casting unicorn (or griffin) blessings, or, MOST LIKELY, he'll be busy summoning.