Fort Alpea

Fort Aplea enters the battlefield with 4 fortress counters on it.
Fort Alpea can be attacked as though it were a
player or Planeswalker.
Whenever Fort Aplea would take damage or be destroyed, instead remove a fortress counter from
it. Then if it has 0 fortress counters, sacrifice it.
All creatures you control with Support gain an additional +1 /+1 for their support bonus.