So... I've been thinking.
We're usually soft to Burn and definitely to Combo decks. What do they have very much in common? Targeting players.
Has any had testing experience with
Leyline of Sanctity? It may be good for the Grand Prix metagame. I'm thinking as a 3 of.
I don't see it being a part of an E-tutor sideboard, so that's going to be an all-in style Sideboard plan. Right now I'm playing with the blue splash to pack Spell Pierce, which helps yet against against both Combo and Burn (sort of a combo deck). It helps vs UW control's planeswalkers too, and random wierd stuff that isn't normally covered by the Etutor plan.