Diovel, Exiled Archangel

Flying, First Strike
Mentor 2 (Whenever this creature attacks, put
two +1/+1 counters on target attacking creature
with lesser power.)
Battalion — Whenever Gabriel, Exiled Archangel
and at least two other creatures attack, reveal the
top five cards of your library, you may exile two
of those cards. You may play cards put into exile
this way as long as they remain exiled.
It only takes a spark...