Error:

… When this unit is chosen by the effect of your grade 3 or greater vanguard with “Krysrain” in its card name, …

… When this unit attacks, if you have three or more units with different card names, this unit gets [Power] +5000 until end of turn, …

… if you have four or more units with different card names, at the end of that battle, …

Correct:

… When this unit’s [Power] is increased by the [ACT] ability of your grade 3 or greater vanguard with “Krysrain” in its card name, …

… When this unit attacks, choose any number of your units. If you choose three or more units, and all of the chosen units have different card names, this unit gets [Power] +5000 until end of turn, …

… if you chose four or more units, and all of the chosen units have different card names, at the end of that battle, …

Reason for Correction: