"It takes perfect concentration for a wizard to dance on the edge of infinity. Never be the one to break that concentration." —One-Eye Whipple
The Windup build encourages aggressive play on the precipice of huge kills versus complete failure while surrounded by big packs of enemies in order to keep the combo going.
In testing build variations for Inferno Act 4 death always occured when overwhelmed without time to respond, either due to the Teleport cooldown being a few tenths of a second away or server lag. This gave me the idea to try a new passive, Unstable Anomaly, that allows an automatic knockback to all enemies once every 60 seconds if life drops below 20%.
This turned out to be a fun choice that matches with the "infinity edge dance" flavor of the build. You can see this in action at 3:40 in the video where it offers a clutch save from near-certain death.
Gear Switch for Izual
If you don't have CC reduction while battling Izual you'll be frozen constantly. He'll go down quicker if you switch out a piece of gear for decreased control impairment. The optimal piece to combine with Dark Mage's Shade is the fairly inexpensive Gladiator Gauntlets. In playtesting gear variations in Acts 2 & 3 the Gauntlets are strong all-around if used instead of opting for CC reduction in the helm or with a slower weapon that gets less twisters off before CC impairing effects kick back in.
There's one death during the Shadow Clone phase. I made the mistake of deciding to teleport away and kite her. The far better option is to go right up and aggressively facesmash as you would for any other enemy as shown in the 2nd attempt.
Frozen Fast Shielding Teleporter
The shielding Hell Witches that start at 2:05 were the toughest battle. I ended up pulling them towards more mobs to Windup on while sticking close to them for Frost/Blast with Teleport because I couldn't get enough Wicked Wind crits in with them constantly shielding or teleporting.
Energy Twister / Wicked Wind, Diamond Skin / Crystal Shell, Frost Nova / Bone Chill, Explosive Blast / Chain Reaction, Teleport / Fracture, Energy Armor / Prismatic Armor, Critical Mass, Unstable Anomaly, Temporal Flux