Witch Hunt

Spells and abilities that would cause a player to gain life still resolve, but the life-gain part has no effect.

The target is chosen at random as you put the last ability on the stack. Players can respond to this ability knowing who the target is.

To choose a target at random, all possible legal targets must have an equal chance of being chosen. There are many ways to do this, including assigning each possible legal target a number and rolling a die.