Instant, R (1)
Common
Target creature gets +1/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)
"All beings carry the fire inside them. The challenge is to unleash it before they dwindle into oblivion."
—Illulia, flamekin soulstoke
Illus. Shelly Wan

7/1/2012: Giving a creature first strike after creatures with first strike deal combat damage doesn't prevent that creature from dealing combat damage.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Standard (Type 2)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern