Quote Originally Posted by Keichi View Post
I was probably simply to fast in the ice phase.
I was in the 75er dungeon and had it multiple times, that i used B3, to switch from fire phase to ice phase and used then b4, to obtain the 3 shards. And switched than allready back to fire with only 6k mp (i didnt played much of attention, because it was only with "side at side" to lvl up the npc). I was probably allways 1-2 seconds to fast with the switch (because the mp regenerated over time and not with action).

The mp change should be positiv, because that scenario shouldnt happen anymore (maybe only in the very first lvl areas, when you only have 1-2 ice soul ready).
Most likely yes. In that area you tend to keep Foul for ice phase if you want to max Thunder dot duration and only use it in fire phase, if the next Polyglot charge is approaching completion - essentially Stormblood gameplay.

Below Lv70 it is actually okay to Blizzard I, Blizzard IV twice or ice Scathe if you don't want to overwrite Thunder dots early.