Caught in the Crossfire

You must choose at least one of the listed modes and pay its associated additional cost in order to cast a spell with spree.

If a mode requires a target, you can select that mode only if there’s a legal target available. Ignore the targeting requirements for modes you don’t choose.

If a spell with spree is copied, the effect that creates the copy may allow you to choose new targets. You cannot choose new modes.

No player can cast spells or activate abilities in between the modes of a resolving spell. Any abilities that trigger won’t be put onto the stack until the spell is done resolving.

If an ability refers to an outlaw or whether a player controls an outlaw, it’s referring only to permanents with one or more of the creature types specified above. Notably, it’s not referring to any spell or card not on the battlefield. However, other abilities may refer to an “outlaw spell” or “outlaw card” in a zone other than the battlefield. Those abilities refer to spells and cards with one or more of the specified creature types.

Outlaw is not a creature type. If an effect asks you to choose a creature type, you can’t choose outlaw.