Sorry for the horrendous delay- I've been in the mountains for like, four days no. It was both great and horrible at the same time.
In other news- One of my group members makes extensive use of pets- Its a Verminspeaker Psyker! Yay!
When he made the character, starting at rank 6, I gave him a pick of one creature from Creatures Anathema that fit the rules of Beast-Master and he chose the Locust Swarm.
Its been a blast- and not nearly as overpowered as it might be considered. I am also allowing him to play with this a lot, because he really wanted his Psyker to be a "Swarm Lord" Type Psyker, controlling beasts and critters and asked me to include these things in the game (which is why, on Sinophia Magna, they will encounter genetically engineered Manticors, Scorpicores and the dreaded… DEEP CROWS) which he'll get a chance to control as well.
The character himself is horrendously weak- and I am trying to teach him to use the creatures effectively with some imagination. Right now, he uses the swarm to stop people with guns for firing, to explore, to flank and to kill lesser unarmored evil minions. But I've boosted the strength of the swarm considerably by applying the Horde Rules to it instead of the Swarm rules- so it does more damage [Its still quite weak in a fight, but its the characters only real weapon.]
He also has a familiar (A Psy-Bonded Familiar "Hand Sized Xenos Type Wasp Like Creature" and has recently taken over a Sinophian Boreworm.
Now there's a lot of house ruling in terms of what he can control, how many of it he can control, and the rate he has to take care of it. For example, the swarm MUST Be fed (and this IS something I remember to do) Fresh Blood constantly- and it grows every two weeks in such a way that, unless controlled, it might simply become too big for the Psyker to control.
The way I've limited his power is simple- He can control a number of creatures based on both his Psy Rating (Which determines how strong the creatures are that he can control) and his WP bonus (which determines how many.) 1 Psy Rating = 10 Hp. So with a Psy rating of 4, he would be able to control a Creature with about 40hp. Now each Slice of 10HP is worth 1Will Power Point. Currently, he has a 70 with all of the advances, the background package and dark holder- which he means he control about 70Hp worth of creatures, with any single creature being limited to 40hp (If a creature has a Single Hp Point up to 20, it still takes 1WP, if it has 21 towards 20, it takes 2, etc etc). So he could "Breed his swarm" to up to a size 40, anymore and he would need to breed another swarm which would be limited to 30- anymore and he would loose control of the insects and they would turn on him and the party, same as if he doesn't feed them for a while or if he feeds them too much.
Seeing as this is the characters main Gimick, hes been asking to meet some stronger creatures that could be more brutal in combat- with the Psyker himself covered investigative skills with his second branch in divination in an interesting manner- which is why I've planned for the group to encounter a number of creatures in Sinophia Magna, not all of which he'll be able to control at the same time (If at all )
Not to mention that, upon hearing of Amicus Tole's presence and influence, the Psyker is considering Sorcery to further enhance his swarms by turning them into Dybuks! Or applying dark mechanical augmentations that would turn them into a horrifying cloud of metal death.
So far, he hasn't broken the balance of the game- the character is original and fun, and his methods are cool as well. Pets are an integral part of his strategy, and I am trying to work with him to make it interesting and fun. In combat, the monsters use his initiative rolls and act following his guidance and he has to live with the consequences of the creature he's picked. The swarms for example are highly heretical and dangerous- and he's very careful to hide them from inspection. The rest of the cell has come to accept them, but still had to roll a fear test the first time he unleashed them from the insides of a hollowed out "Tube" he keeps concealed on his person [and now a built in hidden cavity where here stores SOME of them, because the full amount would not fit.]
Does that help or would you like more information?
Feel free to ask away!