working witch engine

: Until end of turn, target nonartifact creature gets +1/+0 and becomes an artifact in addition to its other types.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) : Add . Target opponent gains control of this creature. (Activate only as an instant.)

: Untap target artifact creature.

Creatures you control have haste. (They can attack and as soon as they come under your control.)

Enchant creature Whenever enchanted creature becomes the target of a spell or ability, that spell or ability's controller gains control of that creature. (This effect lasts indefinitely.)