Team Yeti's Discordia Guide

If you peeked at the linked YouTube video, the gameplay video shows a match of Clash. Likely this isn't so much for Conquest, but of course it would also partially apply.

In non-Conquest modes, Attacker's Blessing is probably the better choice of blessing. What you're doing here with Mage's + Focus + Chronos + Deso is maxing CDR by Chronos, then having to replace Mage's with Deso, otherwise overcapping CDR.

As Kriega said, the Potion gives 10% CDR, so that's a nice late-game option. You also have the possibility of picking up blue buffs, which also give 10% CDR.

So, definitely start with Shoes of the Magi. In a Conquest situation, his build suggestions are solid...you don't need Chronos' CDR that early, so delay it and get other items that will help out your utility in other ways... Soul Gem for sustain (and the CDR + solid heal will do more for you in most cases than Bancroft's Talon as you've got listed), or Divine Ruin for anti-heal (which you can apply very easily with your kit).

In a teamfight mode, then I wouldn't actually go for Kriega's builds...I would prioritize early flat pen and CDR, with a much earlier Chronos' Pendant as you've got listed...but again, not maxing CDR. Attacker's blessing, Magi, Chronos, Deso or Divine or SG, Reaver, 2x situationals depending on need.