I have desperately wanted Krampus for about a year. During the year I spent some EHT during the spring event, and after that hoarded all the EHT (also buying them) for the winter summon: Today I spent all 127 that had accumulated, hoping quite singularly to get Krampus.
I guess I was sort of lucky (or even very lucky) by receiving 4 event five stars and two HOTMis in addition.
I also admit being quite happy with Mother North I received.
Still… I am soooo frustrated: In addition to Mother North I got frigging THREE Mr Pengies, zero Krampuses. GGGGGRRRRRR 
Useless luck…