How would the game benefit from this card?
I thought this card might work like a trap card in game. When opponent plays creatures they will suffer damage accidently stepping on these bombs. I think it would be a good creature killer card for earth.
It would work like a trap card. However:
Would automatic trap cards be a good idea?
Is this a good example of an automatic trap card?
It would a mono creature killer for Earth but it is unreliable and only targets new creatures.
Momentum or Chaos Powered Warden seems like a better form of CC for Earth.
Since it is inferior to warden due to part of what makes it work in ETG, I do not see this as a worthwhile card.