Sylvia, who will miss the opening match of the home-and-away season for an indiscretion last year, is eligible for all NAB Cup matches.
The talented Demon didn’t play in last Friday’s intra-club clash at Casey Fields.
The Demons will also unveil 24-year-old rookie midfielder Magner, after he too did not play in last week’s intra-club.
Magner shone for Sandringham in the VFL last year, before he was selected in last December's NAB AFL Rookie Draft.
He was regarded as one of the VFL's best clearance players.
Boom recruit Mitch Clark and former Crow James Sellar have been named, along with rookie Tom Couch and 18-year-old Josh Tynan. They will all play their first official match for Melbourne.
New co-captain Jack Trengove will not play, meaning fellow co-captain Jack Grimes will lead Melbourne solely for the first time since the duo was appointed earlier this month.
For varying reasons, Jordie McKenzie, Liam Jurrah, Luke Tapscott, Cale Morton, Sam Blease, James Strauss, Neville Jetta, Max Gawn, Michael Evans, Jake Spencer, Kelvin Lawrence, Lucas Cook, Troy Davis, Rory Taggert, Leigh Williams and Jai Sheahan will not play.
In total, the Demons have named a 29-man squad.
Melbourne will play Gold Coast in the first of the triple-header, starting at 6.10pm (local time).
The Demons will then play Brisbane, before the Lions play the Suns in the final match of the night.
Melbourne squad
2 Nathan Jones
3 Clint Bartram
4 Jack Watts
5 Jordan Gysberts
6 Matthew Bate
7 Jamie Bennell
8 James Frawley
11 Mitch Clark
12 Colin Sylvia
14 Lynden Dunn
15 Ricky Petterd
16 Jack Grimes
18 Brad Green
20 Colin Garland
22 Brent Moloney
25 Tom McDonald
26 Daniel Nicholson
27 Jared Rivers
28 Joel MacDonald
30 James Sellar
34 Stefan Martin
36 Aaron Davey
38 Jeremy Howe
40 Mark Jamar
44 Rohan Bail
46 Josh Tynan
47 Tom Couch
48 Jack Fitzpatrick
49 James Magner
