Dust and Gunsmoke

All creatures get -2/-0 until end of turn.
All creatures with toughness 2 or greater get
-0/-1 until end of turn.
If {b} was spent to play Dust and Gunsmoke,
remove target creature from combat and its
controller sacrifices a creature. If {u} was spent
to play Dust and Gunsmoke, copy it the next
time blockers are declared except it loses this
ability(Do both if {u}{b} was spent.)