Tzeentch - Mirror of Fates

While this model is on the battlefield, each time your opponent spends a Command point to use a Strategem, you can roll one D6: on a 5+, you gain 1 Command point.

Once per battle round, after making a hit roll, wound roll or saving throw for this model, this model can use the Mirror of Fate. If it does so, you can change trhe result of that roll to a 6.