Most likely a scanning error. This book has irae, although it is slightly different.
It seems to be a consecutive clause, which requires the subjunctive. Please provide more details.
Quare Adam peccator factus, exuit imagine Dei, subiectus est Diabolicae potestati, et factus est pro sapiente, insipiens, pro iusto, iniustus, pro bono, malus, pro ueraci, mendax, et pro immortali mortalis. Ita quod primus homo, ipsissimum Satanae mancipium sit effectus, filius ire, et aeternae damnationis.