Alharu, Solemn Ritualist Alharu, Solemn Ritualist is definitely on the high costed side for what it gives you
What shall we do? cried Bilbo
Where VictimizeVictimize brings back two creatures for sacrificing one, Whisper brings back one creature by sacrificing two
Rosnakht has the 0 power and 1 toughness typical of the Kobold creature type, but it comes with the battle cry ability, meaning itll buff those 0/1s when you attack with it
Burning-Tree Emissary Traditionally, the easiest way to take advantage of Burning-Tree Emissary is to play it in a go-wide aggro deck like 8 Whack, but Historic doesn't really have any Goblin Bushwhackers or Reckless Bushwhackers (although Castle Embereth is solid, and Burning-Tree Emissary could certainly work in some sort of mono-red tokens / aggro strategy)
Hopefully this information will help you win (or at least have more fun and direction with) your next draft, and maybe therell be opportunity to leverage it at the competitive level sometime later this year