### Deity Yoga
https://en.wikipedia.org/wiki/Deity_yoga_
Four purities
In the generation stage of Deity Yoga, the practitioner visualizes the "Four Purities" which define the principal Tantric methodology of Deity Yoga that distinguishes it from the rest of Buddhism:
1. Seeing one's body as the body of the deity
2. Seeing one's environment as the pure land or mandala of the deity
3. Perceiving one's enjoyments as bliss of the deity, free from attachment
4. Performing one's actions only for the benefit of others (bodhichitta motivation, altruism)
Subtle energy practicesedit
The completion stage employs the "mystic vortices" of the body, the cakra, the subtle energy of the subtle body, the five pranas or vāyu, together with the channels, the nadi through which the energy flows in order to generate the 'great bliss' (Tibetan: Dem Chog or bde-mchog; Sanskrit: Maha-sukha) associated with bodhi or enlightenment.[24] According to Keith Dowman,
Examples of fulfillment mode yogas are dream yoga, the yoga of the mystic heat, Mahamudra meditation, the yoga of the apparitional body, the yoga of resurrection, clear light meditation, and the yoga of uniting skillful means [upaya] and perfect insight [prajna] to create the seed-essence of pure pleasure.[25]
According to Berzin,
On the complete stage, we cause the energy-winds (rlung, Skt. prana) to enter, abide, and dissolve in the central channel. This enables us to access the subtlest level of mental activity (clear light, ‘ od-gsal) and use it for the nonconceptual cognition of voidness – the immediate cause for the omniscient mind of a Buddha. We use the subtlest level of energy-wind, which supports clear light mental activity, to arise in the form of an illusory body (sgyu-lus) as the immediate cause for the network of form bodies (Skt. rupakaya) of a Buddha.[26]
### Mahayoga
https://en.wikipedia.org/wiki/Mahayoga
Mahāyoga (Sanskrit for "great yoga") is the designation of the first of the three Inner Tantras according to the ninefold division of practice used by the Nyingma school of Tibetan Buddhism.
Reginald Ray (2002: p. 124) associates the Mahāyoga with removing the obscuration of aggression (or anger). The relative aspect of the two truths is mentioned and an embedded quotation by Tulku Thondup:
Mahāyoga-yana is associated with the masculine principle and is for those whose primary defilement is aggression. In Mahāyoga, one visualizes oneself as the divinity with consort. "All manifestation, thoughts and appearances are considered to be the sacred aspects of the divinities within relative truth," in the words of Tulku Thondup. By visualizing all phenomena as the deities of the mandala of buddhahood, in the development stage, all appearances are purified.[1]
Ray (2002: p. 124) highlights the pre-eminent usage of visualization amongst the techniques of tantric sadhana and the teaching of the "eight cosmic commands":[2]
One particular keynote of mahāyoga-yana has to do with the use of visualization. In the Vajrayana in general, one visualizes oneself as the buddha, thus giving external form to the enlightenment within. Like-wise, one visualizes the external world as pure and sacred, thus under-cutting the usual practice of taking things as impure and defiled. In mahāyoga, one comes to the realization that actually all of our everyday experience is a visualization. Just as we can visualize ourselves as a buddha and the world as pure, so we can visualize ourselves as an existent ego and the world as defiled. Realizing that all of our images and conceptions of reality are in fact complex visualizations, we gain a unique entry into the underpinnings of the conventional world and gain a certain kind of unparalleled leverage over it. This is reflected in the mahāyoga-yana teaching of the "eight cosmic commands," eight kinds of ways to intervene in the operation of the conventional world and alter its momentum for the benefit of others.[1]
### Four Visions
https://www.rigpawiki.org/index.php?title=Four_visions_
The four visions (Tib. སྣང་བ་བཞི་, nangwa shyi, Wyl. snang ba bzhi) of tögal are:
1. direct realization of reality itself (Tib. ཆོས་ཉིད་མངོན་སུམ་, chönyi ngön sum; Wyl. chos nyid mngon sum)
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2. increasing experience (Tib. ཉམས་གོང་འཕེལ་, nyam gong pel; Wyl. nyams gong ‘phel)
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3. awareness reaching full maturity (Tib. རིག་པ་ཚད་ཕེབས་, rigpa tsé pep; Wyl. rig pa tshad phebs)
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4. dissolution of experience into the nature of reality (Tib. ཆོས་ཉིད་ཟད་ས་, chönyi zésa, chönyi zépa or chözé lodé; Wyl.chos nyid zad sa)
### Yidam
https://www.rigpawiki.org/index.php?title=Yidam
In Tibetan Buddhism practitioners will have a yidam, that is, a practice of a particular buddha or deitywith which they have a strong karmic connection, which for them is an embodiment of the truth, and which they invoke as the heart of their practice. Since in their practice they have recognized the yidam as the natural radiance of the enlightened mind, they are able to view the appearances with this recognition, and let them arise as the deity.[1]
### Laṅkāvatāra Sūtra
https://en.wikipedia.org/wiki/La%E1%B9%85k%C4%81vat%C4%81ra_S%C5%ABtra
The most important doctrine issuing from the Laṅkāvatāra Sūtra is that of the primacy of consciousness (Skt. ālāyavijñāna) and the teaching of consciousness as the only reality. In the sūtra, the Buddha asserts that all the objects of the world, and the names and forms of experience, are merely manifestations of the mind:
On the contrary my teaching is based upon the recognition that the objective world, like a vision, is a manifestation of the mind itself; it teaches the cessation of ignorance, desire, deed and causality; it teaches the cessation of suffering that arises from the discrimination of the triple world.[2]
### Sādhanā
https://en.wikipedia.org/wiki/S%C4%81dhan%C4%81
Sādhana (Sanskrit साधन; Tibetan: སྒྲུབ་ཐབས་, THL: druptap; Chinese: 修行), literally "a means of accomplishing something",[1] is a generic term coming from the yogic tradition and it refers to any spiritual exercise that is aimed at progressing the sādhakatowards the very ultimate expression of his or her life in this reality
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