Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
: Add . Target opponent gains control of Witch Engine. (Activate only as an instant.)
Swampwalk (If defending player controls a swamp, this creature is unblockable.)
: Add to your mana pool. Target opponent gains control of Witch Engine. (Play this ability as an instant.)
--This card has no flavor text --