I was in a ranked match facing an opponent and was met with a combination of Susurian Voidborn and Umbral Collar Zealot repeatedly sacrificing Perigee Beckoner and resummoning it in one turn dropping me down from 19 health all the way to zero with nothing I could do. I'm all for tricky decks but this gave no opportunity to defend and redirect the course of battle on a later turn. This mechanic might want to be looked at.