Gog's Tactical Pyre
From Dungeons of Dredmor Wiki
Summons a wall of fire from The Elemental Plane of Walls of Fire. Burns out over several turns as the otherworldly fuel-line succumbs to the Peak Mana crisis. Greater magical ability makes the spell easier to cast and the fire burn hotter.
Duration: 32 turns
Gog's Tactical Pyre creates a 11 (single square) column of fire. Any creature on this square when it is cast, or moving into the square will be burned.