Instant — Trap, 4RR (6)
Uncommon
If an opponent drew three or more cards this turn, you may pay {R} rather than pay Runeflare Trap's mana cost.
Runeflare Trap deals damage to target player equal to the number of cards in that player's hand.
Illus. Franz Vohwinkel

10/1/2009: You may ignore a Trap's alternative cost condition and simply cast it for its normal mana cost. This is true even if its alternative cost condition has been met.
10/1/2009: Casting a Trap by paying its alternative cost doesn't change its mana cost or converted mana cost. The only difference is the cost you actually pay.
10/1/2009: Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay.
10/1/2009: The player you target with Runeflare Trap doesn't have to be the opponent that drew three or more cards this turn.
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