Yair
Community Supporter
ooc: Don't know much about the system. Can Thomas cast anything useful for the situation?
Well, looking over your list of spells you can try casting Pass the Unyielding Portal. The spell is described on page 137 of the rulebook (do you have it?). Assuming the door is wooden, it allows you to temporarily turn it into play-dough, so you shape a hole in it or whatever. You'd need to touch the door to do so, however. If the door is trapped....
To cast it, roll a dice, add the number listed on your sheet (+23), add the aura modifier set by the SG (-3 in this case). If the total reaches or exceeds the spell's level (5), you cast it (easily).
Another, perhaps safer, option is to cast Piercing Shaft of Wood, which turns a piece of wood into a barbed shaft and sends it flying to the target. If you take large wooden planks (a staff-size), damage is +10 per casting; a few such launched "missiles" might suffice to break the door down.