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Paint the bull's-eye
warlord attack 1

Target: one creature

Attack: Strength vs. AC

Hit: "1[W] damage. Until the start of your next turn, your allies gain a power bonus to damage rolls against the target equal to your Intelligence or Wisdom modifier.
"Level 21: 2[W] damage."[MP2:83]

Paint the bull's-eye is an at-will power available to warlords at 1st level.