Sir Vilhelm of Ariandel

Menace, haste

Elfriede's Blackflame — {1}{b}{r}, Discard a card:
Sir Vilhelm gets +X/0 until end of turn, where X
is equal to the discarded card's mana cost. Activate
only once each turn.

Vow of Silence — {1}{u}{b}, {t}: Counter target noncreature spell. Players can't cast noncreature
spells this turn. Activate only once each turn.