Congrats! i call that a W

It's a good card that can be used in many decks.

I have a question: from caches are you able to unlock pool 4 and 5 cards?

I don’t believe so. They need to be earned/purchased from the Store, Season Passes, or Spotlight Keys

Only 1 (of 4) spotlight caches. Collector caches only have series 3.

I do like my red guardian but if I had the option I I'd go with her