Alieza, Servant of Marley

Domain – The effects of vampires you control each cost two colorless mana less for each Mountain land you control.

Control – Vampires you cast cost X less, where X is equal to the amount of health you gained this turn. This does not affect colored mana values.

Whenever you cast your second spell for the turn, create a Blood Token. Then, Alieza explores twice.
As long as you control Alieza, Servant of Marley: You gain control of all thralls. All thralls you control get +2/+1 and Fi