Just so we're clear, is there ANYTHING a beatstick can do to threaten a wizard?
Of course. So in the matching tradition seen in other threads with a role reversal...
If he's wearing light armor, he's likely a swordsage, and thus theoretically has teleportation maneuvers. Win initiative with Moment of Prescience (which I'm sure he'd disapprove of, because using your class features is soooo unfair), then dimensional anchor and quickened web.
So you do have some items. I'll go with assuming you meant no magical items.
Moment of Prescience works on opposed ability checks. Initiative is just an ability check and is not considered an opposed check. Regardless, Uncanny Dodge only takes a two level dip into warblade or barbarian and would allow them to use counters during your go. I would flat out say if he knows anything about what he is facing he has it. So with that in mind don't use anything save based on him. Also beware of him just using Sudden Leap to move out of your area effects. He could have his full move speed to get close and use a strike on you. Strikes btw are worse than full attacks. I hope you went for the unfair 100 space between you and him.
In this area your lucky magical items are not allowed though. Else you probably would miss with the anchor and leave your self open to a Battle Jump combo and you would be a smear on the floor before it's even his turn. Oh, and you won't have to worry about a rod of absorption limiting your spell choice.
Next round, throw out a forcecage. He can't go anywhere. dispel the web.
If he took warblade levels he IHSes and your cloudkill effect is gone. Also he made his save so you only dealt 2 con damage. You would have time to sit there and build traps around him. But if he has IHS then this is worse than round one since now your down a few of your highest spells and he has a ready action.
Now you just cast invisibility. He's taking huge CON damage for a few rounds.
And hope he don't have Hunter's Sense and find you anyway?
Plus I'd personally buy the 3k or so for permanent See Invisible cast on me if I were him. You should plan for that too.
Then hit him with a save or die effect. Then polymorph into something big and kill his ass. And use Limited Wish to imitate divine power/righteous might.
ToBers are not fighters, you cannot insult them by becoming a melee monster to attack them. They will mop the floor with your bodily remains. Stick to spellcasting and do not engage them in melee range ever.
You also cannot use an immediate action if you are flat-footed. Stance of alacrity gives you a free ''immediate action to use as a counter'' it does not state that you can do it when you wouldn't normally be able to, that whole statement was ridiculous to the extreme. Also, if you are webbed, you are immobilised, sudden leap won't change that. If you arent immobilised, you're still entangled, that is -4 to your dex and half speed. So your no running start sudden leap has a return of 2 on the skill point for 1 foot score, and with entanglement, it's 4 for 1, to get 5 feets further, you need to break dc 20, to get out of the web, you need to get 100 on your jump, hard to do without magic items. Leaping dragon stance only lowers this to dc 80, if you ever wondered.
3: while IHS DOES break cloudkill, it does not break forcecage, that is like saying you can break walls in your way cause they ''affect your progress'' forcecage makes a cage appear around you, it does not affect you. SO sorry, you're still trapped!!! And from there the wizard may take a few rounds to decide what is the best way to buttrape you.
Dimensional anchor can easily be replaced with dimensional lock, witch does about the same thing, only no saves and at range.
4: I thought we had no items except the base ones needed to fight, permanent see invisibility is an ''item'' while the reagents to cast your spell is not, according to common logic. If you disagree, well.... I won't do anything, except shake my head and once again be disappointed by the geek community, who i thought had more sense than this... Also, Hunter's sense gives scent, witch is a somewhat limited way to find invisible ennemies:
This extraordinary ability lets a creature detect approaching enemies, sniff out hidden foes, and track by sense of smell.
A creature with the scent ability can detect opponents by sense of smell, generally within 30 feet. If the opponent is upwind, the range is 60 feet. If it is downwind, the range is 15 feet. Strong scents, such as smoke or rotting garbage, can be detected at twice the ranges noted above. Overpowering scents, such as skunk musk or troglodyte stench, can be detected at three times these ranges.
Noting the direction of the scent is a move action.
And a no item warblade vs a no item wizard, and the wizard is approprietly buffed with polymorph and other various things (maybe arcane strike even!!) the wizard still wins, harsh truth, ridiculous truth, but still the truth.