The construction ἵν' ἐκεῖνος ἦν (or ἵν' ἐκεῖνος εἴη) with the indicative (or optative) to express purpose is a notable syntactic feature in Aristophanic comedy, diverging from the standard Attic usage where ἵνα strictly governs the subjunctive (or optative in indirect discourse) to denote purpose. Here, the indicative (or potentially an optative form depending on the specific manuscript reading of the verb, though the meaning remains 'in order that he was there') reflects a colloquial or dialectal usage often found in the speech of lower-class characters or in the rapid, colloquial rhythm of the comedy, effectively treating the clause as a statement of fact rather than a pure purpose clause, or perhaps indicating a 'final' sense that has bleached into a causal or explanatory sense ('so that he was the scapegoat').