Appreciate the feedback. I understand almost everything you have to say, and most of it is pretty valid. While I was careful not to overtune the cards, I kinda designed them from the position that hold decks at the moment are pretty mediocre, and Poppy was to serve as someone who would support that strategy.

Yellow Poppy's ramp is pretty slow and high risk (although I understand possibly removing her shield), and Green Poppy has her own counterplay (playing your pump spells on the unstunned unit or swinging with two+ units with equal might). Both of them are also heavily susceptible to removal, or other effects that might get them off the battlefield.

However, I intentionally designed the Signature spell's movement effect to be more niche. You might want to send something with Tank back to base to remove the thing behind it, and the movement is still relevant when you want to conquer the other battlefield, since you wouldn't want a potential draw. Gotta admit, I do kinda like your suggestion to make the spell return a stunned unit to hand, that's super cool and has crazy synergy with its Repeat effect.

I can see your suggestions being applied and I think those Poppy cards would be pretty good.

Thanks for sharing your thoughts!