msem-instigator

(As this Discovery enters and after your draw step, add a progress counter. Stop after you've discovered.)
I, II — Scry 2.
Discovery — Whenever a land enters the battlefield under your control, if it doesn't have the same name as another land you control, draw a card.

{T}: Add {C}.
Civilized — {T}: Add {C}{C}. Activate only if you control an artifact, a creature, and an enchantment.

Defiant (Whenever this creature takes damage, if it survives and wasn't defiant, put a +1/+1 counter on it and it becomes defiant.)
Each creature you control with a +1/+1 counter on it has lifelink.

Equipped creature gets +2/+1.
Whenever equipped creature attacks, you draw a card and you lose 1 life.
Equip Knight or Soldier {1}
Equip {3}

Lifelink, trample
Champion of Stilthorpe's power and toughness are each equal to the number of Citizens and/or Peasants you control.

Create a 1/1 red Goblin creature token and a 2/2 white Knight creature token.
Tether to artifact (Then if you cast this from your hand, you may exile it tethered to an artifact you control. When it dies, you may cast this from exile without paying its mana cost.)

Flying
When Chattering Parrot enters or leaves the battlefield, you may draw a card. If you do, put a card from your hand on the bottom of your library.

Equipped creature gets +2/+1.
Equipped creature has first strike as long as it's attacking.
Whenever a Knight or Soldier you control attacks, you may attach Chevalier's Lance to it.
Equip {3}

Chigau Market Outskirts enters the battlefield tapped. When it does, choose a creature card name.
{T}: Add {B}.
{1}, {T}, Sacrifice Chigau Market Outskirts: You may cast a creature spell with the chosen name from your graveyard this turn.

Reach
Spirited (When this creature enters the battlefield, you may activate one of its activated abilities without paying its costs.)
{3}{G}: Exile up to one target card from a graveyard. Scry 1.

Flying

At the beginning of your upkeep, you may discard a card. If you do, draw a card.
At the beginning of your end step, Choking Dunes deals X damage to any target, where X is the number of land cards in your graveyard.

When Churning Sandwurms enters the battlefield, remove all counters from target permanent. Put a +1/+1 counter on Churning Sandwurms for each counter removed this way.

Whenever another creature enters the battlefield under your control, you gain 1 life.
{4}{W}: Return another target creature you control to its owner's hand.

This spell costs {1} less to cast for each creature you attacked with this turn. (Those creatures don't have to still be on the battlefield.)
Flying

Equipped creature has flying.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Target creature you control gains hexproof and indestructible until end of turn. If it's a Knight or Soldier, put a +1/+1 counter on it.

Concord — When Coiling Spiritscale enters the battlefield, return target permanent card from your graveyard to your hand. If there are four or more card types among permanents you control, you may return that card to the battlefield instead.

Destroy target artifact or enchantment with mana value 4 or less.

Once each turn, when you foretell a card or cast a foretold spell, you may create a tapped Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

When Commander of the Cavalry enters the battlefield, you may search your library for a creature card with ride, reveal it, and put it into your hand. If you do, shuffle.
{X}, {T}: Put a creature card with ride and mana value X or less from your hand onto the battlefield transformed and attached to another target creature you control without a Mount attached to it.

As an additional cost to cast this spell, sacrifice a permanent in your portfolio. (Advisors, artifacts, and enchantments you control are in your portfolio.)
Draw two cards and you lose 2 life.

Exile target creature you control, then return that card to the battlefield under your control. Scry 1.

Equipped creature gets +1/+0, has no name, and loses all non-Pirate, non-Rogue creature types.
{1}: Equipped creature gains the creature types and activated abilities of target creature and its name becomes that creature's name until end of turn.
Equip {1}

When Condemned Cavalier enters the battlefield, create a white and black Aura Curse enchantment token named Profane March attached to target player. The token has enchant player and “Whenever a creature enchanted player controls attacks, that player loses 1 life and defending player gains 1 life.”