Flame seed
druid attack 1
Target: one creature
Attack: Wisdom vs. Reflex
Hit: "1d6 fire damage, and the squares adjacent to the target become a fiery zone that lasts until the end of your next turn. Any enemy that enters the zone or starts its turn there takes fire damage equal to your Wisdom modifier. An enemy can take this damage only once per turn.[U
:12/2011]
"Level 21: 2d6 fire damage."[PH2:85]
Flame seed is an at-will power available to druids at 1st level.