msem-instigator

Altar of Destruction enters the battlefield tapped.
{T}: Add {G}.
{T}: Add {W} or {B}. Altar of Destruction doesn't untap during your next untap step unless you control an Angel creature.

Altar of Order enters the battlefield tapped.
{T}: Add {W}.
{T}: Add {U} or {R}. Altar of Order doesn't untap during your next untap step unless you control an Angel creature.

As Amber Hills enters the battlefield, you may pay 2 life. If you don't, Amber Hills enters the battlefield tapped.
{T}, Sacrifice Amber Hills: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.

Sabotage — Whenever an opponent or permanent an opponent controls becomes the target of a spell you control, return target creature card with mana value 3 or less from your graveyard to the battlefield.

Ammbradu Goliath gets -4/-4 for each card in your hand.

Choose one —
• Target opponent discards a card.
• Amosis Charm deals 1 damage to any target and you gain 1 life.

When Ancestor's Skull enters the battlefield, target creature gets +1/+0 and gains menace until end of turn.
{2}, Sacrifice Ancestor's Skull: Target creature gets +2/+0 and gains menace until end of turn.

({T}: Add {G}.)
As Ancestral Glade enters the battlefield, you may pay 1 life. If you don't, Ancestral Glade enters the battlefield tapped.
Basic lands you control have “{T}: Add {G}.”

Scry 3. (To scry 3, look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Equipped creature gets +1/+1.
Equip {1}

Ancient Cairns enters the battlefield tapped.
As Ancient Cairns enters the battlefield, choose a color other than red.
{T}: Add {R} or one mana of the chosen color.

At the beginning of your upkeep, you gain 1 life.
{5}{W}{W}, Sacrifice Ancient Counsel: Create a 6/6 green and white Elk creature token. Activate only as a sorcery.

({T}: Add {U}, {R}, or {W}.)
Ancient Dominion enters the battlefield tapped.

Puzzlebox (Begin the game with this and another card you own from outside the game in the command zone, locked. That card is face down until you unlock this.)
{6}: Unlock Ancient Maze. If the revealed card is green, put it into your hand. Otherwise, put it on top of your library.

{T}: Add {C}.
{3}, Discard Ancient Ossuary: Search your library for a land card, reveal it, put it into your hand, then shuffle.

When Ancient Tablet enters the battlefield, scry 2.
{2}, Sacrifice Ancient Tablet: You may shuffle any number of target cards from your graveyard into your library. Draw a card.

You may play Anemone Cluster from your graveyard as long as seven or more cards are in your graveyard.
Anemone Cluster enters the battlefield tapped.
{T}: Add {G} or {U}.
Cycling {1}{G}{U} ({1}{G}{U}, Discard this card: Draw a card.)

Angelfire deals X damage to up to one target.
If only {R} was spent to cast this spell and X is 5 or more, Angelfire deals X damage to each opponent and each creature and planeswalker your opponents control instead.

As Angelic Barracks enters the battlefield, you may pay 3 life. If you don't, it enters the battlefield tapped.
{T}: Add {U}, {R}, or {W}.

{T}: Add {C}.
{T}: Add {W}, {B}, or {G}. You can't spend this mana to cast a monocolored spell.

{T}: Add {C}.
{T}: Add {R}, {W}, or {B}. You can't spend this mana to cast a monocolored spell.

{T}: Add {C}.
{T}: Add {B}, {G}, or {U}. You can't spend this mana to cast a monocolored spell.

{T}: Add {C}.
{T}: Add {G}, {U}, or {R}. You can't spend this mana to cast a monocolored spell.

{T}: Add {C}.
{T}: Add {U}, {R}, or {W}. You can't spend this mana to cast a monocolored spell.

Annihilation deals X damage to any target.