Reveal the top card of your library and put that card into your hand. You lose life equal to its mana value. You may repeat this process any number of times.
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Boseiju, Who Shelters All
Legendary Land
Boseiju, Who Shelters All enters the battlefield tapped.
{T}, Pay 2 life: Add {C}. If that mana is spent on an instant or sorcery spell, that spell can't be countered.
{B}
Culling the Weak
Instant
As an additional cost to cast this spell, sacrifice a creature.
Add {B}{B}{B}{B}.
{B}
Dark Ritual
Instant
Add {B}{B}{B}.
{0}
Dark Sphere
Artifact
{T}, Sacrifice Dark Sphere: The next time a source of your choice would deal damage to you this turn, prevent half that damage, rounded down.
{1}
Elixir of Immortality
Artifact
{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.
{0}
Jeweled Lotus
Artifact
{T}, Sacrifice Jeweled Lotus: Add three mana of any one color. Spend this mana only to cast your commander.
{0}
Lotus Petal
Artifact
{T}, Sacrifice Lotus Petal: Add one mana of any color.
{1}{B}{B}
Maralen of the Mornsong
Legendary Creature - Elf Wizard
Players can't draw cards.
At the beginning of each player's draw step, that player loses 3 life, searches their library for a card, puts it into their hand, then shuffles.
2 /
3
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Reliquary Tower
Land
You have no maximum hand size.
{T}: Add {C}.
{1}{B}
Sickening Dreams
Sorcery
As an additional cost to cast this spell, discard X cards.
Sickening Dreams deals X damage to each creature and each player.