Yellow Bloons can naturally spawn from the Storm, always spawning on Round 4 (Player 2) and Round 5 (Player 1). Additionally, Arcane Master generates a Yellow Bloon with 1 charge whenever it reloads. Also, Push the Initiative can summon Yellow Bloons during a match.
Yellow Bloon is a fantastic choice for both Aggro and Midrange decks. Their high health per cost forces a response from a player without defenses or healing.
For free to play players, Yellow Bloon is one of the most critically important Bloons for making a good deck, as their versatility and good health allows for a lot of flexibility.
Quincy can use Storm of Arrows against a Yellow Bloon, and optimally when there is another Bloon around its health range.
Because of its 130 HP, a Quincy's passive plus either 4 Arrow Shots or a Storm of Arrows card will fully pop a Yellow.