Slerrio Sli

Other Rogues you control have First Strike.
Whenever you sacrifice another creature, put a
+1/+1 counter on Slerrio Sli and scry 1.
{t}, Remove a +1/+1 counter from Slerrio Sli:
Slerrio Sli gains First Strike until end of turn and fights another target creature you don't control.
Of course, I'm in it for the money.