Olivia Voldaren [Modern Masters 2017] Incarnation but does not prevent your

but does not prevent your opponent from attacking you directly

that is "Dark Magician" or specifically lists "Dark Magician" or "Dark Magician Girl" in its text

Set: Commander 2017 Type: Legendary Creature — Vampire Rarity: Mythic Cost: {R}{W}{B} Menace

inflict the diffetence as Battle Damage to your opponent's Life Points

Olivia Voldaren [Modern Masters 2017] Incarnation but does not prevent yourSet: Modern Masters 2017 Type: Legendary Creature Vampire Rarity: Mythic Cost: {2}{B}{R} Flying {1}{R}: Olivia Voldaren deals 1 damage to another target creature. That creature becomes a Vampire in addition to its other types. Put a +1 +1 counter on Olivia Voldaren. {3}{B}{B}: Gain control of target Vampire for as long as you control Olivia Voldaren.