Below you will find a concise overview of common features tied to promotional rounds, including how they are distributed, typical limits, and the kinds of games that qualify
The first one printed in this type, Song of the Dryads, costs four times as much as Imprisoned in the Moon
Three mana for a 1/1 flyer that stuns something is probably already a playable card especially in a format with a Faerie deck and some payoffs for tapping things, so the fact that you also have the option of just playing this on turn one makes this a nice Common One of the downsides with counter magic that gives your opponent the option of paying mana to ignore it is that it gets worse as the game goes longer, but the Faerie upside here helps hedge against that
And I will get back with you as soon as we can thank you and Keep Whatnot-ing
In tournaments, the organizer may permit a limited number of proxy cards, and define rules about how these cards must look