Get a Sylvan Splendor and a Hamlet in the same sites and play all of your beasts and fairies that draw you more cards when you cast them. Use Onslaught to kill your opponent that turn. If you don't get the title, read the flavour text on the rat cards (cemetery rats, granary rats, etc.). Imposter collection is like so: Battlemage is 3 power beater, deathspeaker is to steal opponents genesis, elementalist is to finish the combo, enchantress is to whack your opponent with sylvan splendor, flamecaller is to shoot your opponents as a finisher if they kill your minions, interrogator is for card advantage, ironclad is for defence, necromancer if for aggro, seer and sorcerer are for finding the combo.