Spirit is overrated. In PvM spear is much better and in PvP spirit exists to set up the enemy, but only a fool is going to be hit by a bone spirit and with or without 3 points from your wand spirit is going to pack enough punch no PvP'er can ignore it. I'd rather get +3 spear, +x decrepify, +X revive. This gives me two critical support skills that other wise would eat into investments in bone synergies. In the end spear has better speed, better mana efficiency, better damage, and pierce.
Imo that is one gosu wand... decrep, spear, saves from putting points into summon res. White runes are so useless & cheap you'd be insane NOT TO make white in that.