Through [casthaven]Elite Vanguard[/casthaven] we were given our old friend [casthaven]Savannah Lions[/casthaven] (who had been out of Standard for one whole rotation) but at a lower rarity and with relevant creature typing
The most efficient targeted removal I can think of is Skred, but you need to be running Snow-Covered Mountains and have a decent amount of them on board which isn't too likely in a Zada deck
They added flying, as all Sphinxes fly, and vigilance, an ability we'd recently added to blue
That face can do no wrong
At the beginning of your upkeep, scry X, where X is the number of planeswalkers you control
For instance, get back Ereboss Titan and now weve invested three mana for a permanent that has given us a 5/5 with upside, a 2/2 zombie, and a planeswalker sitting in play not to mention having put a little pressure on their hand