Instant, 1R (2)

Incinerate deals 3 damage to target creature or player. A creature dealt damage this way can't be regenerated this turn.
Illus. Zoltan Boros & Gabor Szikszai

7/15/2007: Regeneration abilities that would affect that creature can still be activated; they just won't do anything. The creature can't be regenerated for any reason, even if an effect other than Incinerate would deal lethal damage to it or otherwise destroy it.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern