msem-instigator

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.)

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.”)

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

When Dawnhart Ceremony enters, search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Invocation — When you spend four or more mana to cast a spell or activate an ability during your turn, transform Dawnhart Ceremony.

At the beginning of your upkeep, you may put a +1/+1 counter on target creature.

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.

Whenever you draw a card, choose one —
• Dayang's Artistry deals 1 damage to any target.
• You gain 1 life.
• Scry 1.

Lifelink
At the beginning of each player's end step, that player discards each card in their hand, then draws that many cards. When no cards are discarded this way, Dayang, Aspiring Muse deals 2 damage to each opponent.

When Daybreak enters, you gain 3 life.
Creatures can't attack you or planeswalkers you control unless their controller pays {1} for each of those creatures.

Flying, lifelink
When Daystrider Pegasus enters, exile another target non-Pegasus permanent you control, then return it to the battlefield under its owner's control.

When Dazzling Festivities enters or at the beginning of your upkeep, you may have each player reveal the top card of their library. Starting with you, each player may cast a nonland card revealed this way without paying its mana cost.

At the beginning of your upkeep, you may choose a color, then exile two cards of that color from your graveyard. If you do, return a creature, instant, or sorcery card of that color from your graveyard to your hand.

{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.

Whenever a creature you control deals combat damage to a player, it cackles. (Put a menace counter on it. If it already has menace, it deals 1 damage to each opponent instead.)
{3}{B}: Each creature you control with menace gains lifelink until end of turn.

Enchant land
When Death in Bloom enters, mill four cards, then return a permanent card from your graveyard to your hand.
Enchanted land has “{T}: Add two mana of any one color.”

Each creature can't have power greater than its base power and can't have toughness greater than its base toughness.

Deathtouch
When Deathbed Confessor enters, if it entered from a graveyard or you cast it from a graveyard, you draw two cards and you lose 2 life.

Enchant creature
When Deathless Conscription enters, untap enchanted creature.
You control enchanted creature.

You don't lose the game for having 0 or less life.
Whenever you're dealt damage, mill that many cards.
{B}, Pay 2 life: Put target card in your graveyard on the bottom of your library.

Enchant creature
Enchanted creature has winnow. (Damage dealt to it also causes its controller to lose that much life.)

Whenever a creature you control perseveres, you draw a card and you lose 1 life. (A creature perseveres when it's dealt damage and doesn't die.)
{1}{B}: Deathmask Initiation deals 1 damage to target creature you control.

Whenever another creature you control enters, you may change Declan, Wayward Squire's base power and toughness to that creature's power and toughness until end of turn.

Indestructible (Damage and effects that say “destroy” don't destroy this creature.)
Whenever Declare, the Mother Bear deals combat damage to a player, put a +1/+1 counter on it.