If a face-down permanent you control leaves the battlefield, or if the game ends or you leave the game while you control it, you must reveal it to all players (even though in this case, everyone saw it before it entered)
To help these new players along, Magic developers have created a line of products called Starter Kits
Masters sets always have some oddball color combinations that either lack a particularly coherent archetype (RG in MMA2013), have a low average ceiling (UR Elementals in MMA2015, BG Dredge in MMA2013) or are so flexible as to not really have have an archetype (WB in EMA)
This creature is really inefficient
Disney Lorcana Card Pull Rates People at the website CardGamer.com reviewed 250 booster packs for Disney Lorcana cards to get an estimate of pull rates in each level of rarity
Goblin Guide [Extremely Fast and Early Pressure] Most red decks thrive on aggression, and Goblin Guide is one of the strongest red creatures in MTG for that purpose