Almighty Skill

Technical-- Half the total cost of Almighty Skill if
you control no lands that can tap for colored mana.

Tiered (Choose one additional cost.)
• Life Drain -- {1} -- Target opponent loses 2 life
and you gain 2 life.
• Megidolaon -- {3} -- Deal 4 damage to each creature.
• Black Viper -- {5} -- Exile target permanent.