If you take the talents for Mind Freeze to be no runes and no runic power.
Then treat Mind Freeze as if you were still Frost.

Create a four step mapped key.
Step 1
-- Keystroke Action > Mind Freeze Keybind > DK #1
-- Do Not Advance for 2.5 Seconds.
Step 2
-- Keystroke Action > Mind Freeze Keybind > DK #2
-- Do Not Advance for 2.5 Seconds.
Step 3
-- Keystroke Acton > Mind Freeze Keybind > DK #3
-- Do Not Advance for 2.5 Seconds.
Step 4
-- Keystroke Action > Mind Freeze Keybind > DK #4
-- Do Not Advance for 2.5 Seconds.



Then imbed that, into your spam DPS key.

Hotkey: 'x'
Step 1
-- Do Mapped Key > FTL Assist Me > Current Window
-- Do Mapped Key > Mind Freeze > Current Window
-- Keystroke Action > Warcraft Keybind for Main Ability
Step 2
-- Keystroke Action > Main Ability
-- Keystroke Action > Other Ability
-- Keystroke Action > Other Ability
-- Keystroke Action > Other Ability
-- Keystroke Action > Other Ability
-- Keystroke Action > Other Ability