18 Jul 2014
You can activate the last ability only if the Soul is in your graveyard.
18 Jul 2014
Exiling the Soul from your graveyard is part of the last ability's activation cost. A player can't remove the Soul in response to prevent you from activating the ability.
18 Jul 2014
To activate either ability, you must target a player, but you can choose to not target any creatures.