Bring the Ending
Instant
Counter target spell unless its controller pays 
.
Corrupted — Counter that spell instead if its controller has three or more poison counters.
Kaya watched in horror as the illusion vanished from her hands. Jace held the real Sylex—and had activated it before phyresis claimed his mind.
Illustrated by
Phyrexia: All Will Be One#44CommonEnglish