BPhillipYork: I think the exile/play effect is the real gem here, and I like that there is a payoff for not playing the card, though you have to have some way of using the energy, it's a nice interaction, but at 3 mana a bit pricier than really efficient sources of impulse draw
This means that if paired with self-mill or discarding effects, Olivia can be used to cheat the likes of Eldrazi titans or a Blightsteel Colossus from your graveyard, immediately attacking an opponent
The colors feel gentle yet full of life: warm sky, shimmering water, and the deep indigo of her skirt dotted with tiny stars
Four mana for a 4/3 Green Cat with a repeatable bounce activated ability (that can't target itself) for
You could even go for a Cat Tribal subtheme with Marisi, since Arahbo, Roar of the World doesnt just work from the command zone
Paragon of Eternal Wilds, Hunter's Ambush, and Sylvan Anthem each take advantage of your many green creatures