Neurosurge+
Gain

.
Draw 2 cards.
At the start of your turn, apply 3 Doom to yourself.
Gain 4
.
Draw 2 cards.
At the start of your turn, apply 3 Doom to yourself.
Neurosurge
Base
Gain

.
Draw 2 cards.
At the start of your turn, apply 3 Doom to yourself.
Upgraded +
Gain 4
.
Draw 2 cards.
At the start of your turn, apply 3 Doom to yourself.
Card Synergies 4
Blight Strike+
Deal 8 damage.
Apply Doom equal to damage dealt.
Deal 10 damage.
Apply Doom equal to damage dealt.
Borrowed Time+
Apply 3 Doom to yourself.
Gain
.
Apply 3 Doom to yourself.
Gain 
.
Countdown+
At the start of your turn, apply 6 Doom to a random enemy.
At the start of your turn, apply 9 Doom to a random enemy.
Oblivion+
Whenever you play a card this turn, apply 3 Doom to the enemy.
Whenever you play a card this turn, apply 4 Doom to the enemy.
Relic Synergies 2
Relic Anti-Synergies 1