What is the frost mage’s interrupt spell? I know Fire and Arcane have interrupt spells, does Frost have one?
counterspell, same spell
Is there one that’s specific to Frost Mages? Like how Fire Mage has Dragon’s Breath and Arcane Mage has Supernova?
Thematically, if you mean hard stop / knock up spells, I would say ring of frost.
You can spec into Dragon’s Breath and Blast Wave as a frost mage. It ffits the frostfire theme as well. But no, we lost deepfreeze (our stun) a while ago.
Why did Blizzard take deep freeze away?
Deepfreeze was giving mage way too much control essentially. Back in the day, the game was very different and Deep Freeze was too powerful.
They sort of recreated Deepfreeze via the PVP talent, “snowdrift” - hope this helps!
Is that the same reason Water Elemental was removed? Too much control? And what was bad that Mages could control?
Nothing frost specific. Back in MoP frost had Frostjaw, which was removed back in legion.
Why does Blizzard remove class abilities instead of just nerfing them?
The reasoning to remove the Water Elemental as a permanent pet was to fully convert Frost Mage into pure ranged caster which typically was the preferred playstyle.
I think it is just the ebb and flow of class design. We will see a stun for frost mage again someday that is similar to deep freeze I reckon.