Phyrexian Incubation Field

During each players upkeep Incubate 3
•you can transform incubation tokens you control for {1} Mana. Activate only as a sorcery.
•Phyrexians you control gain first strike.
The land transforms in the wake of the Phyrexian horde, conjuring forth more thralls for their army. They strike from unseen places and overwhelm all opposition.