Feature description

Make it so all summoned creatures have the {Owner:player} tag. Currently, summoned zombies and vex are attacked by owned mobs from other mods because they aren't considered allies.

How it improves the player experience

This allows mobs from other mods and summoned creatures from this one to not kill each other.

Iron's Spells N Spellbooks synergies

Allows ISnSB mobs to not be killed by owned mobs from other mods.

Summoned mobs do have a tag of the player who summoned them, although it is "Summoner" instead of "Owner". Is there a mod in specific that uses the "Owner" tag to determine allies?

Plus the {Owner:player} tag is what vanilla uses to make something your ally so having it for the summoned creatures would probably be the best way to ensure compatibility across the board.

The tamed mobs from Alex's Mobs attack the summoned dead and vex but I noticed that a tamed wolf from vanilla will attack them as well.

Will be fixed in an upcoming update. As long as alexmobs and other mods use the vanilla framework, it'll be compatible. Otherwise they might need specific solutions