Sohyrne, Primal Wrath

Reveal Sohyrne from your hand or pay {b/r} if it is
in your command zone, Remove any number of experience counters you have: Kavu spells you
cast this turn cost up to {x} less to cast, where X
is the number of counters removed this way.
Whenever a source you own or control destroys
one or more non-Kavu creatures, you may reveal Sohyrne from your hand or you may pay {b/r} if it
is in your command zone. If you do, you get an experience counter.