Declension table of ?sarvayantrin

Masculine	Singular	Dual	Plural
Nominative	sarvayantrī	sarvayantriṇau	sarvayantriṇaḥ
Vocative	sarvayantrin	sarvayantriṇau	sarvayantriṇaḥ
Accusative	sarvayantriṇam	sarvayantriṇau	sarvayantriṇaḥ
Instrumental	sarvayantriṇā	sarvayantribhyām	sarvayantribhiḥ
Dative	sarvayantriṇe	sarvayantribhyām	sarvayantribhyaḥ
Ablative	sarvayantriṇaḥ	sarvayantribhyām	sarvayantribhyaḥ
Genitive	sarvayantriṇaḥ	sarvayantriṇoḥ	sarvayantriṇām
Locative	sarvayantriṇi	sarvayantriṇoḥ	sarvayantriṣu

Compound sarvayantri -

Adverb -sarvayantri