Daisy Mullan has joined The Blaze on loan ahead of their Rachael Heyhoe Flint Trophy opener against Central Sparks at Edgbaston.
The Thunder all-rounder will be available for the first six rounds of the domestic competition, with the exception of The Blaze's match against her parent club on May 6.
She will provide cover for a number of players tied up by international commitments and those returning from injury.
A versatile batsman and seam bowler, Mullan signed her first professional contract with Thunder in 2022, the same year she represented Manchester Originals in The Hundred.
Last year, she played three matches in the Rachael Heyhoe Flint Trophy. She put in a commendable batting performance against eventual champions Southern Vipers.