Yes, and that's actually the most common use case
Among them are 5 rares and 15 mythic rares, all following the same rarity of the original Enchanting Tales selections
And if you ever had a high school teacher who taught physics using a squirrel-chasing character named Cletus, please drop a comment
You can find Arcane Signet in all five of the C20 decks
Giving your creature indestructible can be a lifesaver if you need other stax pieces (I am assuming if you play Boromir, Warden of the Tower , you are playing a stax deck) to stay alive, or if you just want to beat down someone and survive a board wipe
You can steal their best or cut them off from a color while at the same time playing into everything from hitting with a landwalk creature to getting more mana from a Carpet of Flowers there are a lot of fun Johnny things to do with switching lands