there is a node there that shortens the duration of the aura but i dnt think it works the way described.
so if it falls off in a second, having the aura should reapply all the effects like the curse it itself. it looks like the curse just stays there (the stakes just stab the target 1 time)
the curse should get reapplied everytime it pulses.
meaning the on cast effects on the tree should as well.
this will give better synergy with nodes.