Let's start with this. Getting 23 life quantums a turn is NOT hard to do. Creeper vines synergy with adrenaline is crazy, unless you have to pay 4 life quanta because of the passive ability. I do like like the concept of watering a withered plant, especially with the
synergy already.
Maybe do something like
Vine: Put a poison counter on a creature you control, create another vine.
That would also work with how vines work in real life, leaching their health of other plants. The synergy with Forest Sepctre means it wouldn't be too hard to pull off, it balances the card well, and makes
a really solid combo. As is, I'll give the card a =)/10.