Well first roll will likely be to see if plan "clog waystone" even works correctly. Will be kind of embarrassing if after all this we roll a 01 on that first Learning check and the Waystone explodes when we try to clog it. (Yes Mathilde has the knowledge and it should be 'not difficult' but it's also the first time she's messed with a waystone.)
Then next roll will be to see if cutting the energy source does a "make karak come back" like we want. Then if we get it past that, we can start with the daemons.
Then next roll will be to see if cutting the energy source does a "make karak come back" like we want. Then if we get it past that, we can start with the daemons.