Dear Fellow HotS players.
I see you don't respect the bug much,in my opinion HotS's best initiator bar non,so I humbly lay apon your metaphorical digital feet...
The ultimate Mass initiator build(I call it the LoveBites build cause Lovebug skin ^^)
+explanations why picking them
{this will be fairly long :P}

lvl 1.Regeneration Master:because less need for supports to babysit you later on + more sustain in long fights + it automatically gives you bonus life regen even if you don't pick up single health orb

lvl 4.Locust Needles :because wave clearing/jungling potential/Aoe damage auto-attack

lvl 7.Shed Exoskeleton :because gives extra chase/disengage potential mainly useful at 7-18 lvl

lvl 10.Locust Swarm :because its pretty much AoE Vampiric Ashault and the other one is pretty much garbage

lvl 13.Burning Rage :because wave clearing/revealing stealth+free AoE

lvl 16.Blood for Blood/Imposing Presence :1st if 2+ opponent tanks,2nd if 2+ auto-attackers(rainor,illidan,etc.)

lvl 20.Hardened Shield :because 75% less damage from both abilities AND auto-attacks for 4 secs

What you do is this, right before a bulky teamfight starts, quickly Q their front line(doesn't matter if it hits) so they all clamp together nicely then E in the middle of them to stun and hit R+W and Hardened Shield to drop massive damage to the lot of them, they will of course turn to kill you but if you have a half-competent team they will be able to wipe them before that happens,worst case scenario the opposing team's attention on your teams damage dealers is gone long enough for them to get the better end of the kill trade.
I hope take the old "bugger" for a spin and see for yourself
plz feel free to share your opinions & ideas in the comments
Loving Regards <3
terminalill ( @EU server)

I'll make an early and midrange guide of this built in the folowing week cause RL work <3