Phyrexian Slivdrazi

({p/c} can be paid with either {c} or 2 life.)
Slivers, Phyrexians, and Eldrazi are Sliver
Phyrexian Eldrazi in addition to their other
types.
Slivers you control have Infect, Devoid and
Annihilator 2.
Whenever a Sliver dies, Incubate X, where X is
the number of Slivers on the battlefield.