Cult Master Kel'Thuzad
Type: Monster Ally
Cost: 4
Faction: Neutral
Race: Scourge
Attack: 3
Damage Type: Shadow
Health: 5
Rules:
[BASIC] [1] >>> Target player puts the top card of his deck into his graveyard.

[BASIC] [2] >>> You may play target ally in a graveyard this turn. (Pay costs as normal.)

Set: Reign of Fire (126)