msem-instigator

[+1]: Add two mana of any one color.
[0]: Put two +1/+1 counters on target creature you control. Then put your choice of a reach, vigilance, or trample counter on it. If you have an insight counter, you may put all of those counters on that creature instead.
[0]: You get an insight counter.
[–2]: Destroy target noncreature, nonland permanent.

Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
Cycling {2} ({2}, Discard this card: Draw a card.)

Harness (You may tap a creature you control as you cast this spell. If you do, reduce that spell's mana cost by that creature's power.)
When Darutu's Plow enters, if it was harnessed by an Ox, untap that Ox and attach Darutu's Plow to it.
Equipped creature gets +0/+2 and assigns combat damage equal to its toughness rather than its power.
Equip {3}

Vigilance
Whenever Darutu, God of Bounty enters or attacks, you may put a +1/+1 counter on another target Ox you control.
Enchantment spells you cast have harness. Only Oxen can be tapped to harness those spells. (You may tap an Ox you control as you cast that spell. If you do, reduce that spell's mana cost by that Ox's power.)

Trample, haste
When Dashing Rager enters, attach all Equipment on the battlefield to it. (Control of the Equipment doesn't change.)
At the beginning of the end step, sacrifice Dashing Rager.

Creatures with power greater than Dashing Rogue's power can't block it.

This spell costs {2} less to cast if an opponent was dealt combat damage this turn.
When Dastardly Duo enters, audition for black. (Create a 1/1 Construct Actor creature token, a Cleric Role giving 2/2 and lifelink, or a Warlock Role giving 2/1 and flying. Roles replace older ones.)

{3}, {T}: Each opponent loses 2 life. This ability costs {3} less to activate if you've sacrificed a permanent this turn.

This spell costs {3} less to cast if it targets a card in your graveyard that was put there from anywhere this turn.
Exile target instant or sorcery card in your graveyard with mana value X or less. You may cast a copy of that card without paying its mana cost.

When Data Smuggler enters, if an opponent is cursed, exile the top card of your library. You may play that card until the end of your next turn.

Draw a card.

Flash
Enchant permanent
Whenever enchanted permanent deals damage to an opponent, conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)

When Datalith enters, conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)
{T}: Add one mana of any color.

When Daughter of Calenfyr enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.
When Daughter of Calenfyr dies, you may put a land card from your hand onto the battlefield tapped.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Whenever a creature an opponent controls dies, its controller discards a card and loses 1 life.
{1}{B}{B}, {T}, Sacrifice another creature: Destroy target creature.

Whenever you cast a spell, Daughter of Suisei deals 2 damage to target opponent if that spell has the same name as a card in your graveyard.

Flash
When Daughter of Tempests enters, target creature an opponent controls gets -2/-0 until end of turn.
Attain {3}{U} ({3}{U}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

Flash
Enchant creature
Enchanted creature gets +2/+2 and can't be blocked by creatures with power 2 or less.

Put all attacking creatures on top of their owners' libraries.

{T}, Sacrifice Daunting Skyline: Search your library for a Plains or Swamp card and put it onto the battlefield tapped, then shuffle.

Improve {1}{W} ({1}{W}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
Knights you control have double strike as long as they're attacking.

Trample
Dauntless Pathmaker can't be blocked by creatures with power 2 or less.

Whenever Dauntless Qith becomes the target of a spell or ability, Dauntless Qith gains double strike until end of turn.

Protection from Dusk Chord (This creature can't be blocked, targeted, dealt damage, or enchanted by anything named Dusk Chord.)
{1}{W}: Target Reflection's base toughness becomes equal to Dawn Chord's toughness until end of turn.