If it becomes unattached to a creature, that creature must be sacrificed, so it's best to send that creature into the thick of battle and let it die in a blaze of glory.
It takes very little work to get the citys blessing, so you pretty much always get vigilance with your anthem
The Terastallize effect on Garchomp is wonderfully rendered, giving it a gorgeous crystal look without making it look goofy, while the surrounding water is equally marvellous, with the bright pops of the sea contrasting perfectly against Garchomps deeper colouration
As such, the decks which most commonly include Artazon are evolution-centric decks since most Basics that can evolve dont have Rule Boxes
Couple that with the natural diminishing returns of discard spells by volume as the game goes long, and you can understand why I bias towards the more generic and powerful options
And in multiplayer you can find someone to attack that's open