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Here's the link to the article about Dorje Shugden as a Yidam.
http://www.dorjeshugden.com/all-articles/features/dharma-demystified-dorje-shugden-as-a-yidam/Here is an important part of that article.
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Dorje Shugden as a Yidam
A Yidam is traditionally considered by practitioners to be higher than a Dharma Protector because attainments and enlightenment derived from engaging in a sadhana is the ultimate goal of any Buddhist practice. However, from the side of the practitioner, this does not mean that a Yidam is higher or more enlightened than a Dharma Protector.
Dorje Shugden is currently propitiated as a Dharma Protector and he is also the emanation of Manjushri, who is propitiated as a Yidam. From the side of the deity, he is enlightened whether he manifests as a Lama – Tulku Drakpa Gyeltsen, Yidam – Manjushri or Protector – Dorje Shugden.
There is no question of whether Dorje Shugden qualifies as a Yidam. For an enlightened mind, there is neither labels nor differing levels of enlightenment and so they are all equal in nature. Therefore, the distinction lies not in the deity itself but in the way the deity is propitiated. In other words, what separates a Yidam from a Dharma Protector is their differing role and function from the side of the practitioner and not the deity.
As mentioned earlier in the article, Kyabje Pabongka Rinpoche propagated Dorje Shugden practice because he felt that our modern time calls for an extraordinarily swift and powerful Protector. Therefore, Dorje Shugden is the most suitable Protector of our time based upon his extraordinary strength and swiftness.
This is also the reason why Dorje Shugden would also be suitable to be meditated on as a Yidam. The same level of efficacy and swiftness would ensure that more practitioners would become attained through his practice. Due to his efficacy, Dorje Shugden would be quicker to bestow attainments than many of the other Yidams if he was to be propitiated as a Yidam.
Now, let us explore the reasons for Dorje Shugden’s efficacy and speed. The first reason is the fact that Dorje Shugden currently exists in a worldly form but with an enlightened mind and that means Dorje Shugden exists in the Nirmanakaya form or emanation body of Manjushri just like the Dalai Lama or Tulku Drakpa Gyeltsen.
This also indicates that Dorje Shugden’s form exists within Samsara and has greater karma and affinity with the beings of this time. This was brought about because Dorje Shugden arose from the aspiration of a highly attained lama, Tulku Drakpa Gyeltsen when he passed away. Therefore at the final moment, the mind of Tulku Drakpa Gyeltsen took on the form of a powerful worldly being in order to fulfill this aspiration.
This is unique because most of the other Dharma Protectors and all of the Yidams are in the Sambhogakaya form or enjoyment body. This means that it would take far more merits to contact and receive assistance from them than it is with Dorje Shugden.
The other reason is the fact that Dorje Shugden is a relatively ‘new’ Protector having been only 300 years since he first arose. Therefore, a new Protector like Dorje Shugden would have a greater karma and affinity with the practitioners of this time when compared to the other Protectors. Some Protectors are not propitiated anymore because their time and karma have passed. So, the Protectors assume different forms to benefit sentient beings.
At present, Dorje Shugden is propitiated as a Dharma Protector but one can meditate upon Dorje Shugden as a Yidam as well if a lama composes the necessary texts. The lama needs to compose the initiation text, sadhana and commentary in order for Dorje Shugden to be regarded as a Yidam.
The previous Kyabje Pabongka Rinpoche was known to have composed a sadhana to Vajrayogini and its commentary that is widely in use today. Since the other great sadhanas were composed by attained lamas of the past, therefore, an attained lama like Pabongka Rinpoche or Trijang Rinpoche could also compose the initiation text, sadhana and commentary on how to meditate on Dorje Shugden as a Yidam. Interestingly, Dorje Shugden would be the first Yidam to be in a worldly form.
Having Dorje Shugden propitiated as a Yidam would prove to be very beneficial for the growth of the Dharma because we live in a time of degeneration where attained practitioners and masters are very few and far in between and people have little time for Dharma. Therefore, if Dorje Shugden is propitiated as a Yidam, it would help many practitioners to quickly develop spiritual attainments. What remains now is for a sincere practitioner to make the request to a qualified lama – a request that will benefit the world once it comes to fruition.
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Maybe you now need to check with "Your Guru" about his teachings on Dorje Shugden is not a Yidam?
Or maybe "Your Guru" is right and His Eminence Tsem Tulku is WRONG.