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Greenflame blade
swordmage attack 1

Target: one creature

Attack: Intelligence vs. AC

Hit: "1[W] + Intelligence modifier fire damage, and you deal fire damage equal to your Strength modifier to all enemies adjacent to the target.
"Increase damage to 2[W] + Intelligence modifier at 21st level."[FRPG:27]

Greenflame blade is an at-will power available to swordmages at 1st level.