Lords Of the Mortuary Cult

At the beginning of your upkeep, if you control
your Commander, create a 2/2 Skeleton Warrior
Creature Token.

During your Main Phase, you can Sacrifice a Token Creature you control and untap a tapped land you control and add {c} to your Mana pool. Spend this Mana only to cast Spells from Exile.

All Tomb Kings Creatures you control gain Hexproof.