Alright, time to finally throw this topic at the community. I tend to read a lot more than I post, so this thread comes after a lot of reading, fiddling around, and discussion with some of my local gaming crew.

The Wizard seems to receive a disproportionate amount of glory in posts and competitive play for a number of reasons, the main ones being that he is:

a) A blast to play
b) Has versatile spellbook options with few drawbacks
c) Wins. Consistently 

I've enjoyed quite a few victories as the Wizard myself, but I'm honestly hard pressed to think of strategies that slice and dice him with any consistent degree of effectiveness. It's a given that almost every spellbook is different, but that doesn't prevent us from generalizing at least somewhat about how Wizards operate and what sort of tactics may be effective. Some common spellbook characteristics:

1) Teleport shenanigans
2) Wands
3) Dispel/Nullify/Dissolve effects, often in abundance
4) Gate to Voltari/Wizard's Tower
5) Channeling buffs and conjurations
6) Hydras, gorgons, oozes, gargoyles

Obviously this list is hardly inclusive, but here's the question I want to engage:

How do your competitive spellbooks effectively challenge Wizards? Knowing that an opponent is a Wizard at the start of a game, is there a holistic strategy that you try to employ from the outset?

There are soundbites of advice scattered throughout the forum on this topic, but it'd be nice to have a refreshed strategic look centralized in a new thread. Have at it, but don't leave us hanging with a wishy-washy "it depends!" Give examples using specific mages. Any input is appreciated!