Originally Posted by NeoSeraphi
And the problem with a +4 bonus to Charisma is that eagle's splendor is already a 2nd level paladin spell, so clearly what you're considering is too powerful.
Not when it lasts 1 round/level. For the most part the spell would act either as a short term movement buff or an enhancement that will have a diminishing effect as magic items step in.
The OP wanted the paladin to be a Tier 3. Even with the dual spell, he would still very well be tier 3 at best.