can you use Redirect on an ability and choose new targets for it
can you use Redirect on an ability and choose new targets for it
No. Abilities are not spells.
He's right... but Reroute can.
Reroute (Ravnica: City of Guilds) - Gatherer - Magic: The Gathering
can reroute be used on an activated ability that is being activated from the graveyard, for example: Carrionette?
It can be used on any activated ability (except mana abilities, but they have no targets to change anyway, so it'd be pointless even if you could).
Fluttershy is best pony.