Pros :
1. high health pool
2. regen on minions 25% life every 5 secs
3. Devour synergy with level 13 talent make lots of retchlings
4. escape or secure kill through ultimate
5. long hook if you are a skilled player is just primary
6. can tank enemy team through minion waves because of regen every 5 secs

Your role is to poke enemy, soak damage and hook them in favorable situations