Accompanying the announcement for the “Shovel Knight” Treasure Trove 3-pack amiibo is a reveal video produced by GameGrumps.
Here is the video description from Youtube:
Three brand new amiibo figures based on King Knight, Plague Knight and Specter Knight are coming your way! While playing Shovel Knight, unlock exclusive armor sets, new challenge stages and the ability to summon fairy companions to help players on quests. Trailer produced by GameGrumps.