Bryn Morris hopes his big-game experience can help Pompey secure promotion this season.
The midfielder has become the second arrival of the January transfer window, signing from Shrewsbury on a two-and-a-half-year deal.
He helped his former club get to Wembley in the League One play-off final last term, although they suffered an extra-time defeat to Rotherham.
But Morris wants to go one step further with his new side and help the Blues finish the job they have started.
The 22-year-old said: “I’ve had to move around a few places, but I want to make this my new home now and be successful.
“There will be people fighting for shirts and competition is healthy. Your standards have to be high otherwise someone else will take their chance.
"This is a massive club with a lot of history and this gaffer has taken teams up from this division in the past."
“I’ll bring energy, desire and a good passing range. I played in big games for Shrewsbury last season and hopefully there are many more to come here.
“This is a massive club with a lot of history and this gaffer has taken teams up from this division in the past.
“I want to play as many games as I can and help get this club to the Championship because that’s where it belongs – or perhaps even higher.
“We’re sitting in a nice position at the moment, with a four-point lead at the top, but it means nothing right now.”
Morris spent the first half of the season on loan at Wycombe and scored in a 2-2 draw at Fratton Park back in September.
But he does not have quite so fond memories of a 6-0 defeat suffered during a loan spell with York in 2015.
“It was my first career goal,” said Morris. “I’d scored one before, but the dubious goals panel took it off me! I enjoyed it at the time and hopefully I can get some for Pompey.
“I remember the other game – although it’s one I’d like to forget. We had a sending off and then it went downhill from there.”