Beth, Arcane Enchantress

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Sweeten the Spell — Whenever you cast a spell with mana value 4 or greater, you may search your library or graveyard for a card named Wafer of the Ancients and put it onto the battlefield. If you do,
you gain 3 life.

Master of the Arcane — Instant and sorcery spells
you cast cost {2} less to cast.