We need poison here folks. Ever wanted to walk nicely to a guy, pat him in the back and say "You're gonna be dead in 10 seconds bro."?
That's why I'm suggesting the poison pack :D
Poison Darts.
They're darts tipped with poison that can be thrown to the enemy to poison them. One hit and they'll die in 30 seconds.
Unless they have more than 100 HP which is so uncool :(
Poison Prick.
A small needle tipped with a green acid poison in which you go close to your target and gentle hit them. No sound, no animation. Only thing is that your enemy slows down and dies within 10 seconds.
By the way, did I mention that needles are easy to see in Blockland?
Poison Bomb.
Take a ball.
Dip in poison.
Throw.
Poison Bomb.
Profit.