Bard in twisted treeline is hilarious.

Take an inhib down and you could Magical Journey your team in for the best backdoor ever.

Hell, Magical Journey by itself has some serious shenanigans. enemy trying to retreat? Magical Journey to the far end of their lane. Use Cosmic Binding. Let your mates catch up.

You can even juke with it by making the gateway and just running off. the enemy could assume you used the Magical Journey and follow through to a dead end in the chase.