Highest burst of sylvanas!

on level 1 take lost soul to reduce CD.
on level 4 u take for a extra burst,
on level 7 u take to kill minions really fast,
on level 10 u take your little secret of burst,
on level 13 u take move speed for extra mobility,
on level 16 your burst is complete u can kill everyone that u want!
on level 20 is situational u can take blink to get u more safe, or u take deafening blast for extra damage.

believe u can burst one target after level 16 on a team fight.

sorry about my english, I hope I have helped! bye!