The cost for these things please, because if pile of bark is cheap, i'd play it, get it to 4/1, and keep it.
Should affect a single target creature, for two turns. This is for your 'Tree of Entanglement' card.
Hmm... there should be a card that generates the 'Shedded Bark', just so you don't add six, and only get to use the tree of entanglements ability a maximum of six times, if that.
Maybe a 'shedding tree' that cost more than the other tree, and loses one health each timee you activate the ability shed, which generates the shedded bark.
P.S. I hope you can tell I messed around with the names a little bit.