Interesting. I was under the assumption that a +Teeth/+Bone Wall/+Bone Spirit would be the ultimate wand for White with it already bonusing Bone Spear and Bone Armor. This meant, along with +4 mastery to whatever skeletons/mages/revives you summoned, that you'd have nearly +5 to all the non-Marrowwalk synergies and it would be better than Boneshade, but you're saying the L1 and L30 spells can't be on the same wand.
Well, what combinations would be ideal for White, then? If the limits are 1-18, 6-24, 12-30 then it's pretty simple.
12-30 without Marrowwalk synergy interference means only Raise Skeletal Mage, Revive, Bone Wall, Bone Spear and Bone Spirit. For a non-summoning wand you'd need all three bone skills and this is difficult to get since you can't buy it from a vendor, AFAIK. You must find out the limit of this wand (I dare say ILvl/QLvl/etc since even I'm confused now) so as to face only the monsters just capable of dropping it. Sort of like hunting for charms just high enough to reroll.
6-24 doesn't allow Skeleton Mastery and Raise Skeleton, nor Teeth and Bone Armor; on the high end it doesn't allow Revive or Bone Spirit and so, with Bone Prison coming from the charge synergy on Marrowwalk (and anyone trading for it doesn't want the bonus on the wand), this leaves only more Bone Spear, Bone Wall and Raise Skeletal Mage. This is quite a specific wand and almost as highly desired as the wand mentioned above.
1-18 you have seven possible choices creating 63 combinations of any allowed number of those skills (this not counting the actual level of the bonuses). These are all possible from Drognan, I believe, and maybe you can get lucky enough to hit a 2OS for the runeword (doubt it being original versus exceptional or elite matters for its purpose). On the other hand, if this winds up being a SM/RS/RSM wand I don't believe White would be a good choice; starting a summonmancer might be in your future as it's usually three of the four poison and bone skills people want, and thus limits the combinations of what a useful wand would be.
If I'm to understand what you're saying, do I have this about right, Thrugg?