Antikinesis
Actually, my point about cat's grace and bull's strength stacking was supposed to be directed to Incognito, who, in his post, questioned whether Transmutation spells stacked. My bust in not addressing that question to him.
Thank you though for seeing that the bonuses from the spells are different and thus do indeed stack. I am the player in question who is considering this tactic. The circumstance that led me to this combo was the fact that in the current adventure, my wizard faces a high number of creatures that have spell resistance. This effectively causes me to waste spells, and in many cases, I find that my wizard is unable, or at best, very limited in contributing to the success of my party's combat encounters. Thus, I am trying to adapt to the situation and do what I can to aid my fellow party members.
Let me also say that Polymorph other and polymorph self are almost the same spell. The only difference is target and duration. So, I would ask, if a wizard used Polymorph Other to turn a sorcerer into a troll, and then three years later, the polymorphed sorcerer cast TT on himself, would the polymorph end? I would say no. The TT'd sorcerer would merely become a troll fighter for the duration of the TT.
Incognito also cited p154 of the player's handbook, quoting:
"One Effect Makes Another Irrelevant". The context of the paragraph discusses spells that have "like" effects, and it specifically refers to what happens when a Polymorphed character becomes the subject of a "Polymorph Other". At that point, the newest polymorph supercedes the old one. Shapechanging can also supercede the effect of a polymorph, because shape changing is a "Like" effect. There is no argument from me in this case at all.
However, TT is not a like effect. TT merely gives the recipient the ability to act as another class for the duration of the spell. It does not change the shape or form of the recipient, and thus Polymorph self and TT are not "like effects".
I think that there is confusion in the fact that Polymorphing into a troll provides certain combat advantages, due to increased ability scores, and Tensor's transformation provides combat advantages based on improved attack bonuses and ability enhancements. As I have already indicated, these bonuses should all stack, and that makes for a formiddable combat opponent for the duration of the Tensor's Transformation. I don't think that this particular question would have arisen though, had I indicated that I was planning to polymorph into a kobold and then follow that up with a TT. The combination is not nearly as effective for a melee combat situation.