Ascendant Master

Meditate {u} (As this enters the battlefield and at the
beginning of your upkeep, you may pay {u}. If you do,
put a Chi counter on Ascendant Master).
As long as Ascendant Master has at least two Chi counters, it has Flying. As long as it has at least
four, it has Double Strike.
When Ascendant Master becomes the target of a
spell or ability, remove a Chi counter from it.