Legargia, the Blood-Blamer

Legargia costs {p/c} more to cast if you pay life to
cast her.
Whenever you, a permanent, or a spell or ability
you control becomes the target of a spell or
ability, you may pay {p/c}{p/c}{b/r}. If you do, you may
choose new targets for that spell or ability.
Whenever damage is dealt to you, a planeswalker,
or creature you control, you may pay {p/c}{b/r}. If
you do, that damage is dealt to a target of your
choice instead.