Turn 4, a couple of 19/19 ready to kill.

As this artifact enters, pay any amount of life. , : Create an X/X black Phyrexian Minion creature token, where X is the life paid as this artifact entered.

At the beginning of your upkeep, you may add . This mana can't be spent to cast spells.

, : Untap target artifact.

Sacrifice this creature: You gain life equal to the life you've lost this turn. (Damage causes loss of life.)

: Add .

Add .