Actually, come to think of it, does Deathtouch combine with Treskelions ability? I'd assume it does in which case a Basilisk collar is probably a must.
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I do actually own a Jace the Mind Sculptor but he's in my Ally deck at the moment, saying that I did pull Venser the other day so I may put him in the Ally deck instead as that's blue/white. The trigons I find work well enough as the Chalices (with proliferate) and creatures combined create enough colourless mana to afford it, (each blue creature can tap for 2, and each artifact can be turned blue for 1 blue). I may be tempted into replacing two Chalices with Trinket mages, or possibly to Artisans as they are there mainly to give the Triskelions flying and/or trample for the end game if needed. The 4 keys are just too useful imo.
The mana curve isn't great but I find it works quite well. Not against top class tournament decks but it can definitely hold it's own even against relatively fast decks.