This really isn’t a win+lose situation, EoE just became hands down the most powerful defensive weapon in the game with literally no contest. It breaks fortitude and invulnerability which is a HUGE power creep and then if lycanthropy pops it messes with team composition.
On the other hand in attack it’ll be stupid strong for pvp and completely worthless on high level delves because a 1hp EoE’d unit transforming into a full health and armoured level 400+ unit is straight hell on earth.