Mercenaries - summoning minions

[StarGust-11934]

This particular issue you’re facing is two-fold in terms of bugs.

@StarGust-11934

Charge minions not summoned from abilities directly will no longer attack
(including C’thun’s Mind Flay Deathblow).

And

@StarGust-11934

Spawn of N’Zoth will not attack when being summoned if N’Zoth is using the ‘Evolving Might’ equipment. This appears to be because the minion is transformed when summoned, which removes the charge target.