BBY/ABY is used to position items along the Star Wars Timeline. BBY refers to Before the Battle of Yavin. ABY refers to After the Battle of Yavin. The Battle of Yavin in Episode IV: A New Hope occured in 0 BBY/ABY.
The Youtini Expanded Universe Ranking system is a 1-5 scale that ranks EU book quality, difficulty, and importance. Books closer to Level 1 are easier to read and understand, more important, and of higher quality.
While both the Republic and the Separatists have suffered staggering losses during the Clone Wars, nothing could have prepared them for the battle they face on the desert world of Saleucami. Beneath the surface of this Outer Rim planet, the Dark Jedi Sora Bulq has begun cloning an army of Morgukai assassins. Unwilling to leave this grave new threat unchecked, the Jedi and their armies soon find themselves entrenched in a five-month siege. Now, time and resources have run out, and it's up to a crack team of Jedi, led by Quinlan Vos and Aayla Secura, to infiltrate the Separatist base.