Stoke have signed midfielder Million Manhoef from Vitesse Arnhem and Blackburn striker Niall Ennis to take their signings in the January transfer window to four.
Manhoef has joined for an undisclosed fee on a three-and-a-half-year contract.
The Dutchman, 22, has scored 14 goals in the Eredivisie over the last four seasons.
Ennis, 24, has signed a two-and-a-half year deal, also for an undisclosed fee.
Ennis was a key part of Plymouth's promotion to the Championship last season, scoring 14 goals and adding seven assists, before moving to Lancashire in the summer.
"It's a huge privilege getting the opportunity to represent Stoke City," he said.
"I know the fans want to see exciting, front-foot football and that is exactly the type of team I want to play in too."
Manhoef said he was "very excited" to join the Potters and wants "to show people what I can do here."
Potters' technical director Ricky Martin said the left winger will provide a "fresh and dangerous dimension" to the club's attack.
Stoke were the EFL's busiest club during the summer window, under Alex Neil, making 19 signings.
But in this window they have as expected made only minor 'tweaks', limiting it to four with Leicester City keeper Daniel Iversen and Wolves midfielder Luke Cundle, who had previously played for new boss Steven Schumacher on loan at Plymouth, also added.
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