Edit: Aww, they changed the Widow Mine again.
Edit: I love the new Widow Mine for HotS! [link]
Definitely reminds me of my idea of how the Bane Creeper attacks.
My Infested Planetary Fortress [link]
My Protoss concept [link]
Protoss Campaign concepts [link]
So I always liked the idea of the Seeker Missile from the Raven, sadly we don't see it utilized often. So I thought of similar mechanic with this unit, the Bane Creeper. It would use a close range ability that's energy based, that would inject bane acid into any enemy light, ground unit. There would then be a very short moment before the enemy unit (still able to move freely) would explode damaging or killing near by units. It would cause entertaining micro forcing the enemy to scramble to get rid of the infected unit before their surrounding units suffer. It would mostly be a early to mid game unit, most likely with little hp. Of course, the biggest question is why get this unit rather than a whole bunch of banelings? For one, it would be armored so Hellians wouldn't be so annoying to deal with early game. Verse Protoss, it could help reduce heavy Sentry and Zealot armies being able to out range one force field. Mainly, I would like to see this kind of micro early game and help macro Zergs against early aggression.
Tell me what you think : )