msem-instigator

This spell costs {X} less to cast, where X is the number of Dwarves and Elves you control.
Trample, haste
Whenever Harl and Finn attacks, other creatures you control get +1/+1 and gain trample until end of turn.

Flash
Flying, vigilance
When Henrick enters, exile target spell. For as long as that card remains exiled, its owner may play it without paying its mana cost.
Spells players cast from anywhere but their hands cost {X} more to cast, where X is the number of creatures with flying you control.

Whenever an opponent casts a spell, if no mana was spent to cast it or it has mana value greater than the number of lands that player controls, counter that spell.
{G/W}, Sacrifice this creature: Citizens and Peasants you control get +1/+1 and gain indestructible until end of turn.

Imisti enters with a concoction counter on it for each land card in your graveyard.
{1}{G}, Remove any number of concoction counters from Imisti: You gain that much life.
{3}{B}, Remove any number of concoction counters from Imisti: It deals that much damage to target creature or planeswalker.

Look at the top X cards of your library, where X is two plus the number of creatures you control. Exile up to two of them, then put the rest on the bottom in a random order. You may play the exiled cards until the end of your next turn.

When this creature enters, put two -1/-1 counters on a creature you control.
When this creature dies, put a -1/-1 counter on up to one target creature for each -1/-1 counter on this creature.

Deathtouch
The first instant or sorcery spell with mana value 3 or less you cast each turn has siphon. (Each -1/-1 counter you put on your creatures up to their remaining toughness while casting this pays for {1}.)

Whenever another creature you control enters, Loisch deals 1 damage to any target.
{4}{R}{G}: Loisch gets +X/+X and gains trample until end of turn, where X is the number of creatures you control.

Spells you cast from anywhere other than your hand cost {1} less to cast.
At the beginning of combat on your turn, another target Pirate or Rogue you control gets +X/+0 and gains haste until end of turn, where X is the number of noncreature spells you've cast this turn. That creature can't be blocked this turn.

When The Marrow Lord enters, search your library for a card with arise, put that card into your graveyard, then shuffle.
Whenever you activate an ability of a card in your graveyard or a creature you control enters from a graveyard, this creature deals 1 damage to any target.

Flash
Flying
When Mellan enters, exile up to one other target nonland permanent with mana value equal to or less than the number of creatures you control with flying until Mellan leaves the battlefield.

Flash
When this enchantment enters, if you cast it, you may return target spell or nonland permanent to its owner's hand.
Whenever you cast your first spell during each opponent's turn, create a 1/1 white and blue Bird creature token with flying.

Vigilance
When this creature dies, target creature you control seeks secrets or valor. (Give it that Oath Aura. Fulfill secrets by attacking with it and two or more other creatures to draw a card. Fulfill valor by dealing combat damage to a player to create a 2/1 white Soldier token.)

When this enchantment enters, create your choice of a 1/1 red Dwarf creature token or a 1/1 green Elf creature token.
At the beginning of combat on your turn, up to one target Dwarf and up to one target Elf each get +1/+0 and gain first strike until end of turn.

Choose any number of target nonland permanents each controlled by different players. For each of those permanents, return it to its owner's hand. If you returned a permanent you controlled this way, create a 3/3 green Plant Elemental creature token with reach.

At the beginning of combat on your turn, choose a permanent type at random. Each player sacrifices a permanent of the chosen type other than this enchantment. If no permanents were sacrificed this way, sacrifice this enchantment and create a 6/6 black and red Rat Mutant creature token with trample and haste.

Once each turn, when a creature card is put into your graveyard from anywhere, create a 1/1 blue and black Bird creature token with flying and “When this creature deals combat damage to a player, sacrifice it. If you do, draw a card.”
Whenever three or more creatures you control deal combat damage to a player, that player loses 1 life for each card in your hand.

At the beginning of combat on your turn, you may pay 3 life. If you do, target creature seeks secrets or valor. (Give it that Oath Aura. Fulfill secrets by attacking with it and two or more other creatures to draw a card. Fulfill valor by dealing combat damage to a player to create a 2/1 white Soldier token.)
Whenever you fulfill an Oath, each opponent sacrifices a nonland permanent.

Vigilance
Whenever Asamund attacks, choose up to one each of target Dwarf, Elf and Human. Those creatures get +1/+0 until end of turn.
When you attack with at least one each of Dwarf, Elf, and Human, exile up to one target nonland permanent. Do this only once.

When this creature enters, you may discard your hand. If you do, draw two cards.
Other Pirates and Rogues you control get +1/+1.
Once each turn, when you discard a card, you may create a 1/1 red Pirate creature token.

Discard any number of cards, then draw that many cards plus one. When you do, return target nonland permanent card with mana value less than or equal to than the number of cards discarded this way from your graveyard to the battlefield tapped.

Flash
Flying
Whenever you cast a spell during an opponent's turn, create a Weapon token. When you do, you may attach it to another target creature with flying. (It's an Equipment artifact token with equip {2} and “Equipped creature gets +1/+1”.)

When Sofia enters, if it wasn't cast from your hand, it gains lifelink and haste until end of turn.
Whenever Sofia deals combat damage to a player, exile the top card of that player's library face down and look at it. After the current turn has ended, you may cast that spell from exile by paying life equal to its mana value rather than paying its mana cost. If you do, the spell is foretold.
Foretell {B}{R/W} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Gain control of target creature until end of turn. Untap that creature. It gains lifelink and haste until end of turn.

Choose one. If you control four or more creatures, you may choose any number instead.
• Exile target artifact or enchantment.
• Exile target player's graveyard. Stand as One deals 1 damage to each opponent for each card type among cards exiled this way.
• Target creature you control deals damage equal to its power to target creature or planeswalker.