While its easy to get sidetracked by Disney Lorcanas many characters and items, sometimes the most powerful thing you can pack in your deck is the humble action
When it dies, you may put its +1/+1 counters on target artifact creature.) Creature Artifact - Soldier Cat Bronze Guardian Double strike Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .) Other artifacts you control have ward
Many players try and fit Reliquary Tower into decks where it isn't essential, creating high demand at all times
It can definitely be used for an equipment build without any knights, but thatd be no fun
For example: Thorough Investigation can make extra Clues, which become card draw, sacrifice fodder for Mondrak's activated ability, and even a way to Venture into the Dungeon once you start cashing them in