Heh, the sky's the limit when you are a Telepath, eh? Especially when you get to cherry-pick your opponent's top decks.

One solution would be(on the draw): T1, you play forest and put Unbridled Growth on it. T2 you play Island and put Unbridled Growth on it. T3 you play Tutilage. By this time your opponent has played his own Tutilage as well and by T4 has milled 2 of your Take Inventorys, so on T4, when you play Talent of the Telepath it has Spell Mastery. Now, at this point your hand should have 3 cards (7 to start + 4 draws - 4 lands, 2 Growths, Tutilage, and Talent). Your deck should have 60 - 13 = 47 cards. Your opponent is a zombie who hasn't done anything aside from play the one Tutilage so his deck has 100 - 12 (7 start + 3 draws + the 2 cards your Tutilage milled on your draw step this turn) = 88 cards. Your Talent hits HIS Talent and Pore over the Pages and takes his lib to 81 cards. You play Pore milling 6 with Tutilage and discarding another Take Inventory and then play the Talent on him, hitting the other 2 Pore Over the Pages. At this point he has 68 cards left. You float 2 mana and then play both Pores, milling him 12 with Tutilage and untapping all 4 lands. Then you play your last Take Inventory with the floating mana, drawing 4 and milling him 8. He's at 48 cards now. Next you cast your 2nd Talent with the 4 untapped lands (41), and hit HIS other Talent and one of his Take Inventories. You Take Inventory for 5 cards (38), and then Talent (31) and hit Collective Defiance. You have drawn 18 cards (3 Pores + 2 Take Inventory), cast 2 spells from hand and discarded 3 cards so your library should still have 29 cards and your hand should have 16 cards so Collective Defiance hits for a whopping 32 cards. Milling him to 0. Presumably you could even cast one more Take Inventory from his deck and crack both of your Unbridled Growths to mill an extra 14 cards and increase your hand size to 23 before casting Defiance so this line actually has the capacity to mill a total of 130 cards (double Defiance could do more but would deck yourself in the process).

So, counter-challenge: mill BOTH heads in a 2hg on turn 4 (on the play!) with the caveat that neither opponent is playing and also assuming that Tutilage never mills more than 2 cards per card drawn. I can only think of one way to do it.