Actually, I think Viserys does lack offensive spells in the sense is is unable to seal the deal, so to speak, without mostly resorting to blasting.
What about:
2nd: Blur
3rd: Air of Nobility
4th: ???
4th: Black Tentacles -> Solid Fog
5th: Baleful Polymorph and Necrotic Skull Bomb.
I know you like Heart of Earth, but we shouldn't usually be getting tangled in melee, especially now as we have Fly-By-Attack on LHD, so we can still bite and fly if we can't blast, and Shadow Wyrmling isn't supposed to do it anyway.
It's very neat for the nice amount of temp HP, and the free Stoneskin, but is it the spell we need right now?
It's a 20ft radius burst Evervation
with a swift action cast. Enervation is also SR: Yes.
Is it a worthy trade-off? I think so. Especially as a set up to Baleful Polymorph, or Poison, or Phantamal Killer, or Bestow Curse, or any of the real good SoL we have around, but by itself, it's
well worth a swift action to cast, IMO.
Also, you have a Ooze problem Tomcost
It's a cleric spell, and it doesn't discriminate, and we'd still need to bullrush the targets there.