
Originally Posted by
VortexMagus
Generally speaking though I don't suggest ANY damage soul to start with. You only need three things for the most difficult fights in the game - healing, afflictions, and buffs. Andro brings healing, Mordred brings afflictions, and IMO Arthur is the best for buffs/defense.
The damage from Sieg is uniquely bad because it only works on bosses that rage and then stun, so he's actually trash for running missions. That's also why Solomon is considered terrible - he offers nothing but mediocre damage and usually thats what you need the least to win fights.