Spinehail sacrifices Bestial Minions from Yriel's Fostering

Bestial Minions are "immune to damage" aka "cannot be damaged" and shouldn't be consumed, if the wording of Spinehail "Bow Attacks Sacrifice a random Damageable Minion to fire # additional Arrows" is to be believed.

How to replicate:

1. Equip any Bow
2. Equip Spinehail
3. Equip Yriel's Fostering
4. Summon Bestial Minion
5. Attack
6. Watch the Bestial Minion be consumed