Issues of Control
System: Pathfinder | SRD | Type: familiar
The GM should keep in mind several factors when it comes to companions, whether handling them as suggested above or altering the balance to give you more or less control.
Ease of Play: Changing who controls a companion can make the game easier or harder for the GM. Controlling a cohort in combat is one more complex thing for the GM to deal with. The GM must keep track of a cohort’s tactics and motivations and how those affect it in combat while keeping her own knowledge of the monsters separate from the cohort’s knowledge; otherwise, the cohort will outshine the PCs with superior tactics. Giving you control over these decisions (while still allowing the GM to veto certain actions) alleviates some of the burden and allows you to plan interesting tactics between yourself and your cohort, much as you would have mastered during times you trained together.
Conversely, giving a player full control over the actions of two characters can slow down the game. If you’re prone to choice paralysis, playing two turns every round can drag the game to a halt. If this is a problem, the GM should suggest that another player help run the companion or ask you to give up the companion and alter yourself to compensate (such as by choosing a different feat in place of Leadership, taking a domain instead of a druid animal companion, or selecting the “companions” option for a ranger’s hunter’s bond ability instead of an animal).
Game Balance: Even a simple change like allowing players to directly control companions has repercussions in the game mechanics. For example, if a druid has complete control over an animal companion, there’s no reason for her to put ranks in Handle Animal, freeing up those ranks for other valuable skills like Perception. If a wizard with a guard dog doesn’t have to use a move action to make a Handle Animal check to have the dog attack, he has a full set of actions each round and a minion creature that doesn’t require investing any extra time to “summon” it. If companion animals don’t have to know specific tricks, the PC can use any animal like an ally and plan strategies (like flanking) as if the animal were much smarter than it actually is.
With intelligent companions such as cohorts, giving you full control means you’re controlling two characters and can take twice as many actions as the other players. The GM can create a middle ground, such as requiring you to put ranks in Handle Animal but not requiring you to make checks, or reducing the action needed to command an animal, but these decisions should be made before the companion joins the group.
Sharing Information: Whenever you control multiple creatures, there are issues of sharing information between you and your companions. Some companions have special abilities that facilitate this sort of communication, such as a familiar’s empathic link or
Source: d20pfsrd