Hornet sting almost sees no play .
If you start talking 'bout removal, everything dies to a removal.
It's a great risk to take at turn 2, in Steel Weenie it's a great top deck after a ST.
A 3/1 first strike for 2 and 2 lifes, why, sure!
Just remeber that this is a TEMPO deck and not an Control, nor Aggro.
Everything is about timing in this deck, you can't just drop things around.
Playing just 4 mana leak forces you take hard decisons on what do you really need to counter.
The point of a "tempo deck" is to disrupt your opponent's hand and board development while applying a steady clock to them in the form of efficient creatures, leaving them stranded with their powerful spells.