After his consecration as a priest in 1888, offering his first Mass at Loreto, and his academic training in Rome, where he earned a doctorate in theology from the Pontificia Università Gregoriana in 1889, Miquel Costa i Llobera returned to Mallorca in 1890. There, he continued to explore both local and universal themes through his work, highlighting De l’Agre de la Terra (1897), a collection of narrative poems like La Gerreta del Catiu, Castell del Rei, and La Maina, which integrated Mallorcan cultural tradition with popular meters such as the glossa and romance.
His literary influence extended beyond the borders of Mallorca with the publication of Líricas (1899) in Spanish, praised by critics such as Juan Valera and Marcelino Menéndez y Pelayo, positioning him as one of the great poets of his generation in the Spanish literary scene.
With La Deixa del Geni Grec (1901), winner of the Jocs Florals de Barcelona, Costa i Llobera explored epic and mythological themes, further consolidating his literary prestige. His work continued to evolve with Tradicions i fantasies (1903), a collection inspired by Mallorcan legends that reinforced his role as a key figure in both the Catalan and Spanish Renaixença. Miquel Costa was appointed a member of the Real Academia Española and presided over the Jocs Florals of Mallorca, leaving a poetic legacy deeply rooted in his passion for beauty, culture, and religion.