This beautiful lady from Kamigawa came to Innistrad to study the Moon and the first time I saw her I thought that she would end up being the new Jace. But well in what deck I'd like to play her?
When thinking with what cards she's good the first that came in mind was Gideon. Also playing her early with swept board can mean GG. But well, what walkers can protect Tamiyo if she can't do it herself? We have Sorin, Lord of Innistrad and Garruk Relentless. These walkers are good enough to protect our lady. This probably shows what colors I'd like to try either Esper (UW/UB) or Bant (UGx).
Esper version has access to Forbidden Alchemy flashback and Lingering souls flashback and instant removal in black color.
Go For the Throat/Doom Blade for the most annoying creatures, Tragic Slip (cool with Snappy^^) and occassional Tribute to Hunger that hopefully hits Thrun but still Phantasmal Image is better for this. Curse of Death's hold can be a choice as well and if the little critters from AVR will be played this card will still be viable.
If people will like Cavern of Souls and more 'tribaly' decks will be around it's of no use to play counterspells like mana leak. I expect more walkers to be played and I would definately find use for 1 negate main deck either way. But we will see, for the time being Oblivion Ring will be the card I want till the field kind of settles down. (Probably Terminus can deal with the threats as well)
Green has access primarily to Garruk and acceleration (Mana Dorks or ramp) come to mind as well. With bit of green we can play our new time walk for its normal cost or prepare for it with Ponder for example. I've been experimenting with Wolf Run for quite some time and I wonder what Tamiyo could do in such a deck but I'm not convinced that she would be that good in it. The following list seems completely crazy. Of course this list would run Kessig Wolf Run + 2 sources of red (and Inkmoth Nexi).