It doesnt have the utility of a board wipe, especially against token decks, but it still puts you up two cards compared to something like Drag to the Roots
Blue/green: Scry Midrange As the best at resources color combination, the UG theme here should be pretty familiar: ramp up mana and then play more, bigger threats than anybody else
This can be bypassed with a sacrifice outlet to get rid of the old creature before blinking Nihiloor to take new ones
The best mono-white equine I can think of is Crested Sunmare, who, to be fair, is genuinely great when copied
Basically, this improves your card quality while growing on its own, and then theres the fact that it lends the ability to other Faeries too
Earthquake is also more flexible, so you can cast it for less to wipe out an army of weak tokens, or for much more to take out most non-flying creatures