msem-instigator

Whenever one or more cards leave your graveyard, each opponent loses 1 life and you gain that much life.

This spell costs {X} less to cast, where X is 20 minus your life total.
First strike, menace, trample

Whenever Crain's Crony enters the battlefield or attacks, reveal the top card of your library and put it into your hand. You lose life equal to that card's mana value.
At the beginning of each end step, if you didn't lose life this turn, you lose the game.

Haste
{R}{R}{R}, Discard your hand, Sacrifice Crimson Knight: Draw three cards.

Search your library for a card, exile it face down, then shuffle. For as long as that card remains exiled, you may cast it. It costs {2} more to cast this way if you don't control a legendary creature as you cast that spell.

When Damned Deal enters the battlefield, you draw a card and you lose 1 life.
{B}, Sacrifice Damned Deal: You draw a card and you lose 1 life.

Dawnlit Battlefield enters the battlefield tapped.
{T}: Add {R} or {W}.
{2}{R}{W}: Until end of turn, Frozen Hinterlands becomes a 4/2 red and white Warrior creature with with “This creature has first strike as long as it's attacking” and “Whenever this creature attacks or blocks, torment yourself.” It's still a land. (To torment yourself, lose 3 life unless you discard a card or sacrifice a nonland permanent.)

At the beginning of combat on each opponent's turn, if you control three or more enchantments, choose target creature. Prevent all combat damage that creature would deal this turn.
{2}{W}: You gain 2 life and scry 1.

{U}, Discard a card: Exile target instant or sorcery card from your graveyard. If you do, copy it. You may cast the copy.
{B}, Discard a card: Exile target creature card from your graveyard and pay its mana cost. If you do, create a token that's a copy of it. Activate only as a sorcery.

Deadwood Grove enters the battlefield tapped.
{T}: Add {B} or {G}.
{1}{B}{G}: Until end of turn, Frozen Hinterlands becomes a 2/3 black and green Horror creature with with deathtouch and “Whenever this creature attacks or blocks, torment yourself.” It's still a land. (To torment yourself, lose 3 life unless you discard a card or sacrifice a nonland permanent.)

This spell costs {2} less to cast for each creature that died this turn.
Flying, trample

Destroy target creature if it has the least power or is tied for least power among creatures on the battlefield.
Memento {3}{B}{B} (You may cast this from your graveyard for {3}{B}{B}. If you do, put it onto the battlefield transformed after it resolves. Exile it if it would leave the battlefield or not resolve.)

This spell can't be countered.
For each spell you've cast this turn, search your library for a Dragon permanent card and put it onto the battlefield. Then shuffle.

This spell costs {1} less to cast for each noncreature, nonland permanent you don't control.
When Earthform Pachyderm enters the battlefield, destroy target noncreature, nonland permanent. Its controller creates a 3/3 green Elephant creature token.

Whenever Eclipse Knight attacks, each opponent loses 1 life. You gain life equal to the life lost this way.
Eclipse Knight gets +1/+1 as long as you have 10 or more life than your starting life total.
Eclipse Knight gets +1/+1 as long as an opponent has 10 or less life than their starting life total.

At the beginning of your end step, draw a card for each card you drew this turn.

Whenever you cast a noncreature spell, upgrade Embodied Soul.
• Flying
• First strike
• Vigilance
• Lifelink
{W}: Until end of turn, if Embodied Soul isn't a creature, it becomes a 0/0 Spirit Avatar enchantment creature with “This creature gets +1/+1 for each different kind of counter on it.”

Each creature has haste and “At the beginning of combat on your turn, choose an opponent at random. This creature attacks that player this combat if able.”

Flying, haste
Whenever Emissary of Antiquity deals combat damage to a player, you may cast an instant or sorcery spell with mana value 3 or less from your hand without paying its mana cost.

{U}, Put a travel counter on Endless Discoveries: Draw a card. This ability costs {1} more to activate for each travel counter on Endless Discoveries.
{3}{U}{U}, Sacrifice Endless Discoveries: Return target instant or sorcery card with mana value less than or equal to the number of travel counters on Endless Discoveries from your graveyard to your hand.

Until end of turn, you may cast target creature card in your graveyard without paying its mana cost. When it enters the battlefield this turn, it gains haste and menace. Exile it at the beginning of the next end step.

Enchant creature
Enchanted creature attacks each combat if able.
At the beginning of your upkeep, Eternal Rage deals 2 damage to enchanted creature's controller.

You may play an additional land this turn.
Draw a card.

Exile the top two cards of your library. You may play one of them until the end of your next turn.
Motley — If there are five or more names among nonland permanents you control, you may play both of them until the end of your next turn instead.

Target creature gets -1/-1 until end of turn. If that creature is tapped, it gets -3/-3 until end of turn instead.