Rig Veda is all about spiritual concepts.
Rig Veda mentions the same formless ENERGY or BRAHMAN with various epithets, viz., AGNI, INDRA, Viṣṇu, SARASWATI, VARUNA, etc.
The weaknesses/vices of a spiritual practitioner, which obstructs the practitioner, are mentioned esoterically as Vrtra/Panis/Bṛsaya.
Those obstructions or distractions are illusions and thus Vrtra/Panis/Bṛsaya are called Illusionists.
As the formless ENERGY or Brahman is creator of everything, the the formless ENERGY or Brahman is a greater Illusionist, who will subdue Vrtra/Panis/Bṛsaya. And, Rig Veda mentions as such.
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For example, Rig Veda mentions Indra, Varuna, etc, as the creator of Illusions.
Rig Veda 6.47.18 - Indra
रूपंरूपं प्रतिरूपो बभूव तदस्य रूपं प्रतिचक्षणाय । इन्द्रो मायाभिः पुरुरूप ईयते युक्ता ह्यस्य हरयः शता दश ॥
rūpaṃ-rūpam pratirūpo babhūva tad asya rūpam praticakṣaṇāya | indro
māyābhiḥ pururūpa īyate yuktā hy asya harayaḥ śatā daśa ||
English translation:
He has a form corresponding to every form; this form of his is for display. Indra keeps going about in many forms through his magical powers, for ten hundred fallow bays are yoked for him.
Rig Veda 9.73.9 -Varuṇa
ऋतस्य तन्तुर्विततः पवित्र आ जिह्वाया अग्रे वरुणस्य मायया । धीराश्चित्तत्समिनक्षन्त आशतात्रा कर्तमव पदात्यप्रभुः ॥
ṛtasya tantur vitataḥ pavitra ā jihvāyā agre varuṇasya māyayā |
dhīrāś cit tat saminakṣanta āśatātrā kartam ava padāty aprabhuḥ ||
English translation:
The thread of truth is stretched widely, here on the filter and on the tip of the tongue, through the magic power of Varuṇa. Only the insightful, seeking to reach it together, have attained it. The one who does not advance will fall down into the pit here.
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Rig Veda 6.61.3 says Sarasvati kills Bṛsaya, illusionist.
सरस्वति देवनिदो नि बर्हय प्रजां विश्वस्य बृसयस्य मायिनः । उत क्षितिभ्योऽवनीरविन्दो विषमेभ्यो अस्रवो वाजिनीवति ॥
sarasvati devanido ni barhaya prajāṃ viśvasya bṛsayasya māyinaḥ | uta kṣitibhyo
'vanīr avindo viṣam ebhyo asravo vājinīvati ||
English translation:
Sarasvatī, tear down the scorners of the gods, the offspring of every tricky Br̥saya. And (while) you found streambeds for the settlements, you flowed poison for them, o you rich in prize mares.
