Lemme have a look at this one.
We've got 9 attack, an ability that costs more than 4, and costs another element, so that's -2.
9-2=7
Then we've got the fact that it can use half a precog (+1) and a mindgate (+2 for Duality ability). That's 10 right there. But now, you've got a creature that can be paid for in 2 separate elements. Is that +1, or +2? Either way, the cost should probably increase by 1, due to its versatility.