Markov Dreadknight [Shadows over Innistrad Prerelease Promos] SWSH089 You can only use this

You can only use this effect of “Sinister Serpent” once per turn

and add 1 Ritual Monster from your Deck or GY to your hand whose name is listed on that Ritual Spell Card

and you send the other to the GY

If this card in your possession is destroyed by an opponent's effect and sent to your GY: You can Set 1 "Necrovalley" Spell/Trap directly from your Deck

Set: Planechase 2012 Type: Enchantment — Aura Rarity: Uncommon Cost: {4}{W} Enchant creature

Markov Dreadknight [Shadows over Innistrad Prerelease Promos] SWSH089 You can only use thisSet: Shadows over Innistrad Prerelease Promos Type: Creature Vampire Knight Rarity: Rare Cost: {3}{B}{B} Flying {2}{B}, Discard a card: Put two +1 +1 counters on Markov Dreadknight. The destruction of Markov Manor made the surviving members of the bloodline more dangerous.