Just had a random idea pop into my mind.

Would it be possible to add in a function to tell these two spells to switch their targets, perhaps at a small mana cost (like 3 or so)?

Example:

I target a vine at creature one, creature one goes down.
I tell vine to attack creature two, vine goes after creature two for any following rounds unless I tell it to attack something else or to attack randomly.

We can make it look cool, too.

Sepher whispers a quiet chant and getures toward the writhing vine, which suddenly twists toward an Ithzir seer.

And yes, I know you can dismiss the vine and recast.

~Brian, Sepher's player