Quote Originally Posted by Atlaworks View Post
But... Swiftcast does that too. So isn't that what swiftcast is for?

That seems redundant. It's like... Swiftcast is just a superior version of Surecast or something. If that were the case, that'd be worse than them doing the same thing because it would mean Swiftcast entirely invalidates Surecast.
Swiftcast can be used AFTER to recover your interrupted spell from an attack. Surecast is a prebuff to allow no interupts from the enemy during your next cast whilst rooted, cancelling the cast will remove the buff. On attacks that interrupt spells few they may be Surecast is superior.