Emissary of the higaniel deeps

Islandwalk, hexproff, soul bound(moon) pact of the moon
Emissary of the higaniel deeps can't be counter.
When Emissary of the higaniel deeps enters to the batefiled you may pay {x}. If you do you may cast any number of spells with "Pact of the moon" on it's subtype or name from your grave yard.
All you creatures with "Pact of the moon" gain hexproff