This post is mostly for PvP.
This might see some play in pvp after the recent hotfixes buffed lava burst even more, but it still lacks a bit of oomph as a talent overall imo.
It would be nice if something additional was added to this talent. Maybe “After casting Icefury or Frost shock, lava burst does 20% increased damage. *After casting Icefury, you also gain lava surge” which would feel really good as you would go into a buffed instant lava burst and make Icefury feel more worthwhile to press. Idk if that would be too much, but it would feel quite good imo.