Trench of Sunken Treasure | Legendary [Extended Art Cold Foil]

Once per Turn Instant -- Put a face down card from your arsenal on the bottom of your deck: Gain {r}
Arcane Barrier 1 (If your hero would be dealt arcane damage, you may pay {r} to prevent 1 of that damage.)
Blade Break (When the combat chain closes, if this defended, destroy it.)