Right. I'm going to cast a spell at you now. I'll make sure that you can absorb and redirect it. Imagine it's one of your own spells, and put as much power as you can behind it.

...and brace yourself, if it works it's going to be a little difficult to get your head around.

Sight.

[And if Terra does amplify and redirect the spell correctly- well, Porom wasn't lying. They'll both see every inch of the battleground from every possible angle at once. It's headache-inducing at best, but it'll at least let them know where everyone is.]