User blog comment:AtareVanguard1/Mystery Myseria! (not really)/@comment-26916515-20150914231229/@comment-26069426-20150915144531

That basically means that unless you call him(Kiri is a boy, so I'm assuming so is Miseria) on your first turn for some reason...

Putting 2 spells from the drop zone into his/her soul is part of the call cost. Meaning, you likely won't be able to call him/her until turn 2 or 3.