Text (WL+errata): Choose one - ~this~ deals 3 damage to target player; or ~this~ deals 4 damage to target creature with flying. [Oracle 1999/07/01]
The decision to target a flying creature or a player is made on announcement This decision cannot be changed if the spell is redirected. [bethmo 1997/10/07] See Rule G13.13 on Modal spells.
Note - Also see Modal Spells and Abilities, Rule G13.13.
