Rishi: Traditionally ascribed within the VS hymn-complex to Ṛgvedic seers of the corresponding RV verses (Indra/Agni victory strata); in Śukla-Yajur liturgy treated as ‘mantra of the Adhvaryu’ rather than a personal r̥ṣi-utterance.
Devata: Indra (victory over Vṛtra) with implicit support of the rite’s deities.
Chandas: Triṣṭubh (by RV correspondence of the victory-formula style).