Shifting Grift

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.

You don’t have to control any of the target permanents.

The effects of Shifting Grift’s modes last indefinitely. They don’t wear off during the cleanup step, and they don’t expire if one of the target permanents stops having that permanent type after Shifting Grift has resolved.

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.