I feel like the problem is there’s only one way to really deal with the kind of boards he makes with Finley.
You need healing. You need sustained pressure. You need enemy damage/health manipulation. You need resource generation.
The Lance and the hero power to generate a card do those. To deal with corrupted blood you need 10 cards in your hand to burn them. It also means you never run out of threats and can get some life back with the lance.
What can work is focusing on Keepers of Uldum, Subdue and Eadric or whatever his name is. And hoping he gets multiple Lucentbarks because those clog up his spots and can’t be cleared by plague if they are dead.
Fatigue you need a bit of luck to deal with. I had multiple Malornes because of deathrattle reborn treasure. But there’s a few cards that can help once you burn the blood.
He’s definitely possible though. You just need a plan that works against him. And there’s no nuke plan unlike with Elise/Reno to get past his ridiculous walls.