Returning two small things from the 'yard to play for five or six mana doesn't sound that awesome, but ReveillarkReveillark makes up for the somewhat restrictive cost with combo potential alongside Karmic GuideKarmic Guide and Viscera SeerViscera Seer: Saffi EriksdotterSaffi Eriksdotter and Altar of DementiaAltar of Dementia work as combo pieces, too, among other options, making the 'Lark an important role player in decks like Teysa KarlovTeysa Karlov, Karador, Ghost ChieftainKarador, Ghost Chieftain, and Alesha, Who Smiles at DeathAlesha, Who Smiles at Death
Instead of pulling a rabbit out of a hat, were putting it back in the hat
An endless chump blocker is a great way to keep yourself in a game longer
Gandalf the Grey Gandalf the Grey has several good modes, but its best is easily its ability to copy spells for free
We played Watchwolf and it was good, until we realized the decks that played Watchwolf were not as good as Watchwolf, so it stopped seeing play
When walls fall down well, its not pretty