Gaze of Pain

Until end of turn, whenever a creature you control attacks and isn't blocked, you may choose to have it deal damage equal to its power to a target creature. If you do, it assigns no combat damage this turn.

Gravebind

Target creature can't be regenerated this turn.
Draw a card at the beginning of the next turn's upkeep.

Circle of Protection: Blue

{1}: The next time a blue source of your choice would deal damage to you this turn, prevent that damage.

Hecatomb

When this enchantment enters, sacrifice this enchantment unless you sacrifice four creatures.
Tap an untapped Swamp you control: This enchantment deals 1 damage to any target.

Hoar Shade

{B}: This creature gets +1/+1 until end of turn.

Howl from Beyond

Target creature gets +X/+0 until end of turn.

Hyalopterous Lemure

{0}: This creature gets -1/-0 and gains flying until end of turn.

Icequake

Destroy target land. If that land was a snow land, Icequake deals 1 damage to that land's controller.

Infernal Darkness

Cumulative upkeep—Pay {B} and 1 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
If a land is tapped for mana, it produces {B} instead of any other type.

Infernal Denizen

At the beginning of your upkeep, sacrifice two Swamps. If you can't, tap this creature, and an opponent may gain control of a creature you control of their choice for as long as this creature remains on the battlefield.
{T}: Gain control of target creature for as long as this creature remains on the battlefield.

Kjeldoran Dead

When this creature enters, sacrifice a creature.
{B}: Regenerate this creature.

Knight of Stromgald

Protection from white
{B}: This creature gains first strike until end of turn.
{B}{B}: This creature gets +1/+0 until end of turn.

Krovikan Elementalist

{2}{R}: Target creature gets +1/+0 until end of turn.
{U}{U}: Target creature you control gains flying until end of turn. Sacrifice it at the beginning of the next end step.

Circle of Protection: Green

{1}: The next time a green source of your choice would deal damage to you this turn, prevent that damage.

Krovikan Fetish

Enchant creature
When this Aura enters, draw a card at the beginning of the next turn's upkeep.
Enchanted creature gets +1/+1.

Krovikan Vampire

At the beginning of each end step, if a creature dealt damage by this creature this turn died, put that card onto the battlefield under your control. Sacrifice it when you lose control of this creature.

Ice Age