The bruising loose forward likes to win the collisions and will have to be at his abrasive best tomorrow for what shapes as a fascinating match against University at
Kettle Park.
The 25-year-old apprentice carpenter is in his fifth season for Dunedin and is closing on 70 games for the team.
He was named Otago Daily Times club player of the year last season after an impressive campaign.
His ability to punch holes in the defensive line and tireless appetite for hitting the ball has been a huge asset.
But he is hoping to make improvements on defence this season.
It has been an area of sharp focus for Dunedin since it was well-beaten, 51-11, by Taieri in round two. The team missed 43 tackles in the game.
"We have a lot to work on, I guess," Toma said.
"I want to be a bit more active on defence.
"We got outplayed [against Taieri] and got blown off the park. It was a real wake-up call for us."
Toma is from Christchurch but moved to Dunedin to attend university. But he is now focused on his trade and raising his 15-month-old daughter Lily with partner Emily McKay.
He has made one appearance for Otago. He came off the bench for a game against Northland in 2016.
Toma is part of the wider training squad and would like more opportunities at a higher level.
"I've just got to stay injury-free and play consistently throughout the season and hopefully I'll get a chance."
A good showing tomorrow will not dent his reputation. University is unbeaten in three starts and is the form team in the competition, alongside Taieri.
Dunedin is in third place but has been boom-bust with two wins and that big loss to the Eels.
The Challenge Shield and the Jonathan Keogh Memorial are also on the line, so there will be no lack of motivation for the sides.
"We have to be more accurate around the execution of our game plan. We have to hold our discipline and not give away easy penalties and stuff like that.
"They are going to play it fast, so we have to match it with them and be physical. They like to move the ball, so it should be a good test for us."