Similar to Champion of Wits, Hour of Promise will most likely see the most play that it will while Ulamog, the Ceaseless Hunger is still in the format, but I also think that we are just scratching the surface on how good this card can be
Nintendo loves its exclusives, and so for those Mario, Zelda, Animal Crossing, and Pokemon fans, you'll be waiting a very long time if they ever come to other platforms at all
Not every opening hand will look like this, but I would be hesitant to keep a hand without a one-drop creature, especially in pre-board games
Its satyr typing means it fits in with Gallia of the Endless Dance
It could even be triggered by casting a spell - the spell would say "When you cast this spell, Discover X"