Much like Equipment, Auras, and traditional Vehicles, they risk clogging your hand if you draw too many without enough creatures to station them
These cards used to be handed out to card shops that organized events, as well as to staff at bigger events and championships
Single cards, whether vintage or modern can be purchased off eBay at a relatively acceptable price point
Now, Janet was finally here
Even if this was just doubling your team it's really good, but when you consider all of the ETB's that are in the average deck you see the true potential
(2020-01-24) If you put an Aura on an opponents permanent, you still control the Aura, and mana symbols in its mana cost count towards your devotion