Haste
{T}, Sacrifice an artifact: Put a +1/+1 counter on each Goblin you control.
Whenever an artifact is put into a graveyard from the battlefield, you may pay {R}. If you do, create a 1/1 red Goblin creature token. It gains haste until end of turn.
If Krenko, Baron of Tin Street dies at the same time as one or more artifacts are put into a graveyard from the battlefield, its last ability will still trigger for each of those artifacts.