I already gave a team for Majora's Mask Link, but with Scarlet and Violet out, I wanted to give an idea that I think is straight on theme for him:
The Treasures of Ruin. The 4 sealed Legendaries in the game are all actually the objects described by their abilities, given form through...
Link (Majora's Mask)
Aegislash (Sword and Shield)
Phantump/Trevenant (Deku Mask)
Golurk (Goron Mask)
Jellicent (Blue) (Zora Mask)
Ceruledge (Fierce Deity's Mask)
Azelf (thematically based on the Kusanagi, one of the Three Sacred Treasures of Japan, the one that embodies valor, which means...