Reflector Mage played a key role in decks featuring Rally the Ancestors, and then later Bant Company, such that by the time that Azorius Flash was dominating the format people were very fed up with the card
(Again, this is explained in further detail in my column on the design of double-faced cards.) The road to the Werewolf mechanic began not down the design path of double-faced cards, but rather down the path of designing the day/night mechanic
It wouldn't be shocking to find a broken Zirda deck out there in a non-Standard format
Simian Spirit Guide Simian Spirit Guide barely counts as a creature, but its technically good enough for me
But, that 6 damage really doesnt look great
You can cycle at instant speed, allowing you to trigger Rielle on your opponents' turns as well