First, Japanese product is packed differently Japanese cases typically hold many more boxes than English cases, and pack counts differ, so never assume the English 36/216 math applies
Kalain, Reclusive Painter rewards you for playing creatures with treasures, which is one of the fairest uses for them
However, this Cinderella brings added synergy to Princess decks, making her a worthwhile add to those looking to build around that specific classification
You can also cast a cheap spell and Remand it to recast and get multiple Veyran triggers
You wont like getting attacked by Sleeper Agent, and dropping this on turn 1 really annoys someone, but the right turn for politics to start is turn 1, so get to it
It's a celebration - why not try both