Murderous Rider
{1}{B}{B}
Creature -- Zombie Knight
2/3
Lifelink
When ~this~ dies, put it on the bottom of its owner's library.
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Swift End
Instant -- Adventure
Destroy target creature or planeswalker. You lose 2 life. (Then exile ~this~. You may cast the creature later from exile.)
The Cauldron of Eternity
{10}{B}{B}
Legendary Artifact
~this~ costs {2} less to cast for each creature card in your graveyard.
Whenever a creature you control dies, put it on the bottom of its owner's library.
{2}{B}, {T}, Pay 2 life: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.