The guildmages beat me singlehandedly in the top 8. One time he used it to counter a time vault activation when I was dead on board. The other time I tinkered up sphinx of the steel wind and he just tapped it down and killed me. I am not sure about its inclusion or how it was all day for him, but he certainly trounced me with them.
Anything that helps Fish beat Oath and that pesky Sphinx sounds good to me! Will have to lay my hands on some and give them a whirl... thanks for the response. 
