Hunkalug Flitterspitter

Partner with an uncommon Faerie (The Faerie
does not have to have partner or be legendary to be
your second commander.)
Whenever Hunkalug Flitterspitter attacks, you
may sacrifice a Faerie. If you do, flip X coins,
where X is the sacrificed creature's power. For
each flip you win, Hunkalug Flitterspitter gets
+3/+0 and gains flying until end of turn.