Nevassa, Daein Capital

Nevassa, Daein Capital enters the battlefield with
6 fortress counters on it.
Nevassa, Daein Capital can be attacked as though
it were a player or planeswalker.
Whenever Nevassa, Daein Capital would take
damage or be destroyed, instead remove 1 fortress counter from it. Then if Nevassa, Daein Capital
has 0 fortress counters on it, sacrifice it.
Whenever a creature entering the battlefield
would trigger a creature's Squadron ability to activate, it activates 2 additional times.