Double Yellows are the highest-HP 1-delay Double Bloons in the game. Because of this, it's a strong candidate for strategies involving Improved Fortification plus delay reductions.
Combining this card with Improved Fortification and either two Quick Ready or One Quick Ready and one Hastening Bloon, will guarantee that any opponent without shields, defenders, or Adora's passive will lose if there are no other bloons on the user's side.
Add Ability Ban when facing against Adora when doing OTK strategies revolved around a boosted Double Yellow.
If the opponent has no Defenders, shields, or Adora's passive, three Quick Readys on each of the Storm's Double Yellows will OTK the opponent, even with Hero Protection active.