msem-instigator

Ghastly Castle enters tapped unless another player controls a land that could produce {U} or {B}.
{T}: Add {U} or {B}.

Put a +1/+1 counter on target creature you control. It can't be blocked this turn.
Flashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Creatures can't attack you or a planeswalker you control unless their controller pays {2} for each of those creatures.
Creatures can't block Ghastly Scraper unless their controller pays {2} for each of those creatures.

Until end of turn, target creature you control gains “When this creature dies, return it to the battlefield under your control with a +1/+1 counter on it.”

{2}, {T}: Prevent all combat damage that would be dealt to and dealt by target creature this turn.

{T}: Add {C}.
{T}, Sacrifice Ghost Quarter: Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle.

({T}: Add {U} or {B}.)
Ghostspore Mire enters tapped.
{1}, {T}: Add {U}{U} or {B}{B}.

When Ghoulcaller's Graf enters, mill two cards.
{T}: Add {C}.
{5}, {T}, Sacrifice Ghoulcaller's Graf: Return up to two target creature cards from your graveyard to your hand.

Target creature gets +3/+3 until end of turn.

{2}, Sacrifice Giant's Remains: Draw a card.
{5}, Exile Giant's Remains from your graveyard: Create a tapped 4/4 black Skeleton Giant artifact creature token.

Giant's Temple enters tapped.
{T}: Add {G}.
{2}{G}, {T}: Target nonland permanent you control becomes a creature with power and toughness equal to its mana value until end of turn. (It loses all other types.)

Until end of turn, target creature you control gains “{T}: This creature deals 1 damage to any target.”
Draw a card.

Regenerate target creature. (The next time that creature would be destroyed this turn, it isn't. Instead tap it.)

As an additional cost to cast this spell, discard a card.
Draw two cards. Gift of the Phoenix deals 2 damage to you.

Prevent all damage that would be dealt to each of up to three target permanents this turn.

{T}: Target player mills a card.
{2}, Sacrifice Gilded Cipher: Draw a card.

{T}: Add {C}.
{T}, Sacrifice Gilded Gulch: Add one mana of any color.
When you discard Gilded Gulch, you may pay {1}. If you do, create a tapped colorless land token named Fading Rift with “{T}, Sacrifice this land: Add one mana of any color.”

Equipped creature gets +2/+1.
Whenever equipped creature becomes untapped, you draw a card and you gain 2 life.
Equip {3}

You may choose not to untap Glacial Shelf during your untap step.
{T}: Add {C}.
{4}, {T}: Tap target creature that's attacking you. It doesn't untap during its controller's untap step for as long as Glacial Shelf remains tapped.

Glacial Vista enters tapped.
{T}: Add {W} or {U}.
{1}, {T}: Add one mana of any color.

Gleaming Hot Springs enters tapped unless you control a Mountain.
{T}: Add {W} or {U}.

{T}, Pay 1 life: Add {U}.
{T}, Pay 1 life, Sacrifice Gleaming River: Search your library for an Island card, put it onto the battlefield tapped, then shuffle.

Gleaming Veldt enters tapped unless another player controls a land that could produce {G} or {W}.
{T}: Add {G} or {W}.

Prowess
Wither (This deals damage to creatures in the form of -1/-1 counters.)

Flash
Reach
Glimmerbark Treant enters with X +1/+1 counters on it.
When Glimmerbark Treant leaves the battlefield, you gain life equal to its power.