Predecessor Builds > Drongo > Full Shred

Skysplitter for % max health damage and some heal
Viper / DS / Basilisk all have >Corrode: Dealing damage to an Enemy Hero reduces their physical armor by 5% for 2s. Stacks up to 6 times.
building all 3 allows you to reach max stacks in 2 autos. at max stacks you get:

Your Critical Strikes deal 15% more damage against Targets with 6 stacks of Corrode.
Your abilities deal 20% bonus true damage against Targets with 6 stacks of Corrode.
Your Critical Strikes deal 15% more damage against Targets with 6 stacks of Corrode.