It was the limited time Gacha; I ONLY wanted Ardisia and prayed to both Moarsi and Wutan. As you saw, 4/5 draws gave me a Rainbow. It was only on the 6th draw I finally got Ardisia, the only one I actually wanted.
Basically, it was not good luck; it was the FKG RNG gods making a mockery of my prayers and giving me otherwise absurdly amazing stuff I didn't want . I can't believe Wutan would betray me LIKE THAT.