Re: New Plant idea!
Nice idea, but I think it would be WAY to OP (SPECIALLY at that cost).
Just for a quick comparison:
Lightning Reed is a 2 cost 1/2 plant that doest splash damage for 1.
This means that it can do AT MOST, 3 damage for 2 suns.
Snapdragon is a 4 cost 3/1 plant that does splash damage for 3.
This means that it can do AT MOST, 9 damage for 4 suns.
With your plant, you can do (potentially) 10 damage for 3 suns. (If you place it on the middle lane as you said).
If you (kinda) keep the format, it should do approximately 6 damage for 3 suns, not 10.
You would be doing more damage with your plant than with the Snapdragon, and with less suns.