Malzahar, Hextech master

Sacrifice an airfact: proliferate.
Metalcraft— {u/b}{w/b}: draw a card.
Triumvirate: If you choose Malzahar, Hextech
master to be your commander, you can choose
two other Legendary creature with the same
colors. If you do so, consider those cards having
the partner ability. Also consider Malzahar,
Hextech master having the partner hability.