The text of the spell says "it replaces 4 lost Hit Points as these are eliminated through physical wounds. Whenever damage is inflicted on
the target, thus, lost points are automatically replenished up to the limit found by the roll."
To me this implies that a roll is made on a D10 and the usual variations applied so does Blessing give back 2/3/4, 2/4/6 or 4/6/8 hit points when used?
I've currently assumed 2/3/4 hits returned to the recipient of the spell.