Macro to cast only when modifier is pressed???

[Tynk]

/cast [nomodifier] Spell1
/cast [modifier:shift/alt/ctrl] Spell2

absolutely should work, but just for a matter of efficiency and clean code, you can do something like this.

/cast [nomod] Spell1,[mod] Spell2

or... /cast [mod] Spell1; spell2

you mean /cast [mod] Spell2; Spell1 :P