I think I've now done >10 wonderpicks chasing a 1♢ Mienfoo with no success. What seemingly common card still evades you?

Weezing is the last diamond-rarity card I'm missing from Mewtwo packs (but I have 2 full-art copies). Honestly those 3♢ cards sometimes seem more rare than exs or full-art cards.

I had the same problem with Ivysaur and chameleon too. RNG will give you a friggin animated card before it gives you a stage 1 evolution of a starter