Read-only feature:

Minigame Island: If you land on an amiibo space, use to receive coins / Use to revive your character once

If you land on a space with Goomba or Koopa Troopa next to it, use their amiibo to receive 50 coins. Otherwise, use any of these amiibo to receive 10 coins.

Source: Official Trailer, / Thanks: memoryman3

Read-only feature:

Immediately unlock the character's Minigame Pack