Question on Shadow Priest Macros

Hello fellow Warcrafters.

I was messing around on my shadow priest trying to learn how to condense rotations into macros and I have hit a snag on one macro and do not even know its is possible. I decided I would ask the community as my google quick search skills were not providing any answers.

Is it possible to create a macro that handles both spells cast at Target and at Cursor. Also can these be placed into a cast sequence.

For example can I create a macro that casts Vampiric Touch on a target and then allows me to cast Shadow crash \[@Cursor\]. This macro will reset when changing targets and reset after a period of time.

Is there a way to create this macro in a typical cast sequence setup?

\#showtooltip

/castsequence reset=3/target (Spell), (Area Spell)