Berthel, King Under the Sea

Affinity for Merfolks (This spell costs {1} less to
cast for each Merfolk you control.)
When Berthel enters the battlefield, create a 1/1
blue and green Merfolk token with Soulbond
and "As long as this creature is paired with
another creature, both creatures have hexproof".
He bows to no one except for his beloved consort.