Someone (N1CK.50) has done it without potions with hoard lvl 250, kingdom lvl 14 and his team was (Plague Rat - Rattigar - Hex Rat - Sledgepaw) and Rat Banner. He didnt show his medals, but my guess is 1x Cedric and 2x Nysha. Hoard Quality increased from 50% to 300% - #47 by TheIdleOne Post number 47 aprox.
Good Luck =)
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