Jillaroos quartet Kirra Dibb, Karina Brown, Tazmin Gray and Simone Smith arrive at the Mount Smart club, bolstering a squad that is yet to taste any success.
Donald says he is thrilled with the talent they have assembled.
"It has been hectic pulling the squad together in such limited time but we have a strong group we can build here to do the Warriors proud.
"Bringing in Ellia and Evania from their sevens rugby union background is going to add a special dimension and we're able to draw on a good base of players who know what the NRLW premiership is all about."
The additions should come in handy to address the women's on-field problems. The Warriors have failed to make the competition final the two years the competition has existed.
In amongst the fresh singings comes a blow for the squad, with veteran Honey Hireme-Smiler ruled out of the competition with a knee injury.
The squad will assemble in Sydney on Sunday.
Warriors 2020 NRLW squad: Stephanie Ball, Madison Bartlett, Karina Brown, Brianna Clark, Kirra Dibb, Samantha Economos, Crystal Tamarua, Tazmin Gray, Ellia Green, Georgia Hale, Naomi Kara, Teaghan Hartigan, Taimane Levu, Laken Paitai, Kanyon Paul, Michaela Peck, Evania Pelite, Hilda Peters, Shaniah Power, Kayla Sauvao, Simone Smith, Shontelle Stowers, Brad Donald (coach).