Artifact Creature - Construct Wall
~ comes into play with five +1/+1 counters on it.
: ~ loses defender until end of turn.
, remove a +1/+1 counter from ~: Exile another target creature you control, then return that card to the battlefield under your control.
Based on Howl's castle from the Ghibli film. The counters represent the different parts the castle is made of and the flicker ability its magical door.
Next: A wall that switches power and toughness