bone splinters costs 1 to cast,it's only conditionally good.
Crippling chill removes a threat for a while and cantrips, sorta efficient bad at removing things.
Death wind is good.
defang is a pacifism that stop pingers and co, good luck getting past that wall or dealing with his continuous-activated effects.
Fleeting distraction sort of counts? I dunno, but as far as 1 mana cantrips go this does something.
geist snatch is pretty bad, move on.
Ghoulflesh is terrible.
grave exchange is terrible.
guise of fire does a lot for your typical 1 damage speel, but how often do you need a 1 damage spell.
.
joint assaultt can two for 1, but why should you use it on defense?
leap of faith can probably kill something,really conditional.
mist raven is really good, and doesn't deal with really good creatures.
necrobite is similar to leap of faith.
peel from reality:see raven, except is not good.
pillar of flame is a shock that deals with undying,2 damage for 2 mana is efficient, but even the common green soulbond creature dodges it.
righteous blow:efficient? yes, but see pillar of flame description.
searchlight geist is sort of like wind drake, but good luck trying to use it has removal.
snare the skies is bad, but is difficult to say that is overcosted.
spectral prison is aggressively costed for that kind of effect, now if only that effect was decent in limited...
thunderbolt is a nice variation of plummet, but why would you maindeck plummet?
undead executioner has the same problem as pillar and blow but also has a high mana cost.
Unhallowed pact is sort of like a terrible pacifism I guess?
zealous strike will most likely kill something and is not overcosted but is still bad removal.
, but good luck permanently killing something big.