Hey BS? Before your idea can move into the Crucible, you should probably fix the discrepancy between the table and the card art:
"Passive: Generate an Undying Wraith after death.
Curse (

): Kill target poisoned creature."
The word 'Curse' needs to reflect the card image, as it's
after the colon (or ":") in your picture. Removing the parenthesis is also a good idea:
"Passive: Generate an
Undying Wraith after death.

: Curse
Kill target poisoned creature."

Just my two cents.