Complex sentence: Yogācāra is based on an early Indian philosophy by masters such as Vasubandhu and are also known as "consciousness-only" since they teach that all phenomena are phenomena of the mind.
Split into simpler sentences: Yogācāra is based on an early Indian philosophy by masters such as Vasubandhu. Practices of this lineage are also known as "consciousness-only" since they teach that all phenomena are phenomena of the mind.