Ouch. The water hits him squarely in the back, knocking the air out of him. The water is not only freezing cold like the pool, but icy cold in a way that only magic can do. It literally tries to suck all the heat from his body.
Kinetic damage is 13 less soak. Heavy wound unless soak is at least three; a confidence point reduces it to medium.
The magic effect has penetration 8. If he cannot resist it is another damage of 10 less soak. Note soak is rolled against this damage, not against the first one.
Turold grabs a good hold of Thom's hand to pull him out of the water. He isn't very heavy, so that's going to work out, except that the elemental is following. It is a strange sight ... a body of water moving in a pool of water. You can hardly tell what is elemental and what is just water, except when one of those bludgeoning arms extends from the surface.
Does Edwin or Betula want to act while Thom is being helped out of the attacking water?
Edwin grabs one end of a towel and tosses the other end towards Thom to give him something to grab hold of. A drowning man will clutch at straws, Edwin thinks, and tries to help without getting too close to the elemental
Thom can get hold of the towel so that Edwin can help pull, but co-ordinating the towel with Turold's more direct help is difficult, and it does not make an awful lot of difference to the total help.
"Remember the splash of boiling water, Betula." Turold says to Betula, as she heads for the other room, while finishing to pull out Thom. "Might be an elemental too."
You all get into the small antechamber. Those who went into the pool shiver from the cold, and the hot steam from the the bath behind the curtain helps only a little. Otherwise the antechamber feels safe and nobody disturbs you, so you have time to discuss what to do next.
"This place would require some magical expertise to inhabit to be sure. I suppose it's not unusual for places with vis for spirits and other magical creatures to settle after so long."
Betula casts Bind Wounds gently touching the large bruise that is forming as she finishes casting her hand seeming to linger longer than necesary. "This will only last until sunset, at which point you will need to rest or have it recast."
"Well, yes, there may be a few... Difficulties with living here that may need to be surmounted but the magic is not weak and might be stronger if we return the spirit to her rightful place. And perhaps she would be of some assistance."