[It's super fucking effective. The tree is instantly engulfed in flames like it's made of wax paper, flames spreading through the branches and turning the whole ceiling into a roof of flames. The roots spontaneously combust everywhere across the room, where they crawl up the walls or thread through the tiles. Every inch of this thing is burning.]

[You, holding the spear, are immune to Fira, of course. It licks over your skin, gentle and warm and harmless, even as it tears the whole room to shreds.]

[The tree burns and burns and burns, straight to cinders, then to ash, then it disintegrates into a hot pile of smoking dust. The flames flicker and go out as they run out of fuel, and a black cable that was tangled in its branches swings free and clatters to the floor.]

[At the end, all traces of the tree are gone except for the lingering smell of bonfire. Somehow, everything else in the room is untouched. Cobalt's body is still there, and his chest is a gaping hole where a trunk once was. But somehow, it doesn't look nearly as gruesome as you would have expected. His chest just looks like a big red splotch.]

[With the tree gone, and his eyes closed, you could almost imagine he is simply resting.]