SMITE

As Nut, hit 3 enemy Gods with a single cast of Skyfall 3 times within one match.

Skyfall is Nut’s ultimate ability. When used, she gathers all her energy, flying high into the air and becoming untargetable for 3s. Nut then may move and aim before firing a massive black hole toward the battleground that lands after a short delay, dealing damage to all enemies.
The targeter is pretty large however it is split into two rings. Your targets must be inside the inner ring for this to count.

For this, you have to hit 3 enemies in a single cast, 3 separate times in a match.

Your best bet for this is Arena, as always. Enemy gods tend to bunch up a lot and make the easier. As it’s only to hit the gods not kill them, I’d recommend getting some cooldown reduction too, that way you can use your ultimate more often.

You can also try pairing this with any gods that pull enemies together, like Ares, Da Ji or Cerberus.

As always, if you downvote, tell me why.