If I can attack with Cecily, I'll be able to draw a card, lose a life and if I have eleven or more cards in hand I'll cast an instant or sorcery for free
The same can be said for Earthbend decks that are more than happy to hit their Earthbended lands, and for those decks who like to target their own indestructible lands with spells like Cleansing Wildfire
Notable Reprints Avenger of Zendikar, Taurean Mauler, Tendershoot Dryad, Raise the Palisade, Kindred Summons, Coat of Arms, Maskwood Nexus, Sol Ring, and Bitterblossom get Secret Lair art themed around a massive party
Then it's going to die
It has similar vibes to forests seen or read about in various fantasy fiction where travelers are steadily trying to evade evil
Building a deck around this ability is very likely to be a very popular strategy in Lorcana , as of the release of Fabled