"When you are able to keep players of the calibre of Ruan Pienaar at the club it sends a good message to everyone else about what we are doing here. He has had three or four good years here, his family is settled and it is a good environment for him," said Anscombe.
"His signing will give everyone confidence going into what is going to be a very physical encounter with Leicester. We have to match them up front because that is where it has to be done first and foremost."
Anscombe steered Ulster into the PRO12 final last season and knows the importance of winning home games in the Heineken Cup. As well as two-time winners Leicester Tigers, they also have last season's quarter-finalists Montpellier and Benetton Treviso in their pool.
"Every player wants to play at this level. It is the highest level in Europe and the northern hemisphere and it is an exciting stage of the year," said Anscombe.
"We've been building nicely this season, and had a couple of good results in the last few weeks. That has given the guys some confidence and self-belief. After a good week of training we are really looking forward to Friday night at Ravenhill.
"The support we get, and the noise our fans make, at Ravenhill really grows the players a couple of inches and makes them more powerful.
"We have got to believe in ourselves and back ourselves to do the job at home. We have done well against them before at home, but that counts for nothing - it is all in the past. It is a new day and a new game."