Not much to be said, Potion of Illusion in Highlander deck is nuts. 2 weapon destroyer pretty useful in current Meta vs DH,Hunter,Warrior,Rogue.
Should be able to outvalue Priest quite easily if played correctly. Was playing with Archvist as a end game vs Priest/Mirror and Warrior (Get rid of bombs) . But then later swapped it out with Alexstrazza as fill it fit in better with the deck (Dragon , life gain/Finisher)
Special mention Cobalt which i feel is nuts as Mage 1 mana spell are very useful in general which I was almost tempted to also include but could not find the space.
Other replacements in deck which i feel was ok:
Wandmaker, Puzzle Box , Archvist , Frost Nova.
Any further comment and suggestion welcome!