Wall of Fire (T4, W4)

Level12

An immobile blazing curtain of opaque, shimmering, violet fire springs into existence. One side of the wall, selected by you, sends forth waves of heat, dealing @[2d6 fire damage][roll 2d6 as damage for 'Wall of Fire'] to creatures within 10 feet and @[1d6 fire damage][roll 1d6 as damage for 'Wall of Fire'] to those beyond 10 feet but within 20 feet. The wall deals this damage when it appears and on your turn each subsequent round. In addition, the wall deals @[5d6 fire damage][roll 5d6 as damage for 'Wall of Fire'] to any creature passing through it. The wall deals double damage to undead creatures.

If you evoke the wall so that it appears where creatures are, each creature takes damage as if passing through the wall. If any 5-foot length of wall takes 20 or more cold damage in 1 round, that length goes away.