Magic in this world is gender linked. Estrogen lets you focus and direct the power, while testosterone allows you to channel larger amounts. Shamanism is a field of study that calls upon the magic of the planet, and relegated mostly to witches. Rather than using their own natural energies which are finite, an individual uses the energy of nature and the world around them. This form of magic is unlimited and never runs out. The user doesn't control the magic directly as it is too massive and powerful, but rather guides it in a particular way as it flows through them. These rituals require hours to perform and months of preparation, such as gathering various materials and a period of ritual cleansing or fasting. Magic resulting from these rituals are not permanent, and last as long as the spell is being performed. An example would be a rain dance, or a spell altering a landscape for a particular amount of time.
Covens in this setting function similar to royal houses and operate as political entities. They are matriarchal and led by witches, with the top matriarch ruling over the family and extended or lesser clans connected to the main coven. Males can potentially reach high positions as well, but they have a handicap. Due to an ancient curse thousands of years ago, males cannot do magic naturally. Instead, they depend on a ritual they go through that a group of 12 other witches must conduct. These rituals require various components, incantations, and a period of six hours, as well as months of preparation and steps that all parties must perform. This includes a period of fasting, prayer, etc.
The resulting warlock trains in sorcery, a field of magic that involves using your own energy to create spells of destructive power. These effects are immediate and can have long lasting effects, such as a fireball or a lightning bolt. They are also much quicker to use, but also more dangerous to the user. Warlocks can be found in high positions of power, soldiers, or bodyguards for other witches. They are also used to add power to rituals, which is often needed to create stronger effects.
Covens need to create warlocks because shamanism is necessary to the continued function of society, and many spells cannot be performed without them. However, there are concerns that warlocks, being stronger in sorcery, can rise up to take control of a coven, or band together to create their own entity to rival other covens. While witches have the strength of numbers, their form of magic is slow and takes preparation while warlocks are more immediately powerful. What is the best way to prevent this from happening?