Legality depends on the tournament format -- Earth Kingdom Protectors can be legal in some formats and banned or restricted in others
Oracle gets away with not only being a 4 drop ramp effect but also a weak Exploration because she is self contained and a source of ongoing card advantage
To its credit, Wizards own client is very, very generous with its starter decks, which makes it an easy recommendation to anyone new to Magic, especially when paired with a solid tutorial
Up until this set, only one and two coloured token cards existed
This card was designed to allow an Enchantress deck to exist without creatures (green oddly enough has this quirky creatureless side that shows up from time to time)
Playing a full complement of Madame Medusa - The Boss is also a clear nod to the Castle plan, because you do not care about her low Lore value compared to other options like last season's staple, Lady Tremaine - Imperious Queen