Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.

This spell costs less to cast for each creature on the battlefield.
Blasphemous Act deals 13 damage to each creature.

Flying
At the beginning of your upkeep, target player draws a card and loses 1 life.

Flash
Flying
When Bogardan Hellkite enters the battlefield, it deals 5 damage divided as you choose among any number of targets.

Bojuka Bog enters the battlefield tapped.
When Bojuka Bog enters the battlefield, exile all cards from target player's graveyard.
: Add .

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Germ creature token, then attach this to it.)
Equipped creature gets +X/+X, where X is the number of creature cards in all graveyards.
Equip

Trample
, Sacrifice an artifact: Bosh, Iron Golem deals damage equal to the sacrificed artifact's converted mana cost to any target.

Sacrifice Bottle Gnomes: You gain 3 life.

Choose a color. White creatures you control gain protection from the chosen color until end of turn.

When Breaching Leviathan enters the battlefield, if you cast it from your hand, tap all nonblue creatures. Those creatures don't untap during their controllers' next untap steps.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Brine Elemental is turned face up, each opponent skips their next untap step.

: Add .
, , Sacrifice Buried Ruin: Return target artifact card from your graveyard to your hand.

, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle your library.

Flying
Whenever Butcher of Malakir or another creature you control dies, each opponent sacrifices a creature.

Create a token that's a copy of target creature you control.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

As Caged Sun enters the battlefield, choose a color.
Creatures you control of the chosen color get +1/+1.
Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.

Return target instant or sorcery card from your graveyard to your hand.

Whenever a creature enters the battlefield under your control, put a +1/+1 counter on each creature you control.

When Cathodion dies, add .

Flash (You may cast this spell any time you could cast an instant.)
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Flying
Other white creatures get +1/+1.