The 21-year-old previously represented Mumbai Indians in the IPL in 2022 and 2024 but went unsold at the auction in November.
Brevis has played 81 T20s in his career and scored 1787 runs with a highest score of 162, while he represented the Proteas in two T20Is in 2023.
He helped MI Cape Town win their maiden SA20 trophy earlier this year, where he scored 230 runs in the tournament at a strike-rate of 184.
Brevis has also played in the Caribbean Premier League (CPL) and represents the MI franchise in Major League Cricket (MLC) in the USA.
The Super Kings are currently sitting at the bottom of the IPL points table with just two wins in seven games and earlier in the season had their regular captain Ruturaj Gaikwad ruled out of the tournament with an elbow injury.
A commanding display from Pretoria Capitals' young stars Dewald Brevis and Bryce Parsons propelled the team into their second SA20 final, as they overcame Sunrisers Eastern Cape by seven wickets at Kingsmead, Durban, on Wednesday night.
Bangladesh has imposed an indefinite ban on the broadcast and promotion of the Indian Premier League following the controversial removal of fast bowler Mustafizur Rahman from Kolkata Knight Riders ahead of the 2026 season.
David Miller, Lungi Ngidi and Anrich Nortje were all bought for more than R3million at the Indian Premier League mini-auction, while Quinton de Kock also picked up a new deal.
Former Proteas captain Faf du Plessis has confirmed that he will not put his name in the auction for the 2026 Indian Premier League, and has instead decided to play in the Pakistan Super League.
