We've come up with a very interesting workaround for you
Opening 12+ boxes gives you a reasonable shot at both a SAR and a UR
As mentioned earlier, it's a Link Monster that requires the use of Marincess Battle Ocean, so if you Link Summon it using Marincess Crystal Heartas link material while that card is still in existence, you should be able to deal with most bounces and removals
This ability has so many offensive and defensive applications, and can even be reused if the player has a means of generating Spell Counters
(You cannot activate this effect the turn this card is Normal Summoned, Special Summoned, or flipped face-up.) As long as this card remains face-up on your side of the field, it is unaffected by any Spell Cards
Mono-blue cards were the only cards considered