It can also protect your team from a board wipe or grant double strike to a creature, making this a card that just does everything an aggressive instant could want to do
Equip variants or equip abilities with restrictions, like the "equip legendary creature" ability of Wrecking Ball Arm, are still equip abilities, and their costs will be reduced by Cloud's last ability
I could however see wanting one copy in a green/black deck to flood the board with tokens as a win condition
If Prowess players can find opportunities to get the ball rolling, Astrologians Planisphere may put on the hurt in the Standard format
While theres plenty more you can do with this deck, starting with these combos is a great place to start, and will help you tackle some of the best decks in the format right now.
You could even add Loot, Exuberant Explorer or Hugs, Grisly Guardian for extra land drops and card advantage