Phrav Library Guard

Enchantment spells you cast cost {1} less to cast.
Runic Proficiency — Whenever an enchantment enters the battlefield under your control, Phrav Library Guard gets +2/+0 and gains vigilance
and lifelink until the end of the turn.
"Given the Dimir's recent advances in intelligence gathering, we have to reinforce our security."
—Brenus, Azorius King