Step 1: Be an artificer or a caster that uses a lot of buffs or touch spells.
Step 2: Commission (or craft) a batch of aurorum
dye arrows (for 4301 gp).
Step 3: Have them enhanced with spell storing.
Step 4: Fill them with lots of touch spells and buffs, and fire them from a bow.
Congratulations, now you can buff your party members and debuff your foes with a touch attack action, rather than a move action, and if you have Rapid Shot and Manyshot you can multi(de)buff all over the place, and can move around without having to get into the thick of things.
You also get to reuse those arrows over and over and over again.
Now, how do you get all of an artificers infusions down to a standard action?