Win the indicated number of matches with the Mind Of Void deck to unlock the corresponding card for it.

Card	How to unlock
Borderland Behemoth	7
Bramblewood Paragon	10
Bramblewood Paragon	3
Dragon's Claw	12
Dragon's Claw	14
Eyes Of Wisent	17
Eyes Of Wisent	16
Hurricane	6
Mirri, Cat Warrior	5
Obsidian Battle-Axe	11
Obsidian Battle-Axe	1
Shock	2
Shock	9
Vengeful Firebrand	8
Vengeful Firebrand	4
Wurm's Tooth	13
Wurm's Tooth	15