effascinatio
From LSJ
εἰργάζοντο λογάδην φέροντες λίθους καὶ ξυνετίθεσαν ὡς ἕκαστόν τι ξυμβαίνοι → they went to work bringing the stones as they picked them out and put them together as each one happened to fit
Latin > English (Lewis & Short)
effascĭnātĭo: ōnis, f. effascino,
I a bewitching, charming; in the plur., Plin. 19, 4, 19, § 50; 37, 10, 54, § 145.