This master action card cost 3 tread tokens. It allows you to summon monsters by killing cultists in the same room:

1 zombie per 1 cultist

1 Tindalos Hound per 2 cultists

1 Shaggoth per 3 cultists

If you have 6 cultists in the same room. Can you summon 2 Shaggoths for only 3 tread tokens or should you use "summoning" twice (6 tread tokens) to summon the 2 Shaggoths? Can you use "Summoning" several times in the same turn?

These is killer, because you can rise 6 zombies in a second that investigators have to fight or evade them.

flames said:

It would cost 6 threat for two Shuggoths, played as two discrete Keeper Actions, for 3 threat each.

Summoning can be used without limit.

One could not raise 6 zombies; only 4 zombies may be in play at a time.

Thanks for the help. You are right. I will do this way.