msem-instigator

Draw X cards, then abound. (To abound, you may cast a spell that costs less than this from your hand without paying its mana cost.)

Whenever a player activates an ability that isn't a mana ability, Burning-Tree Shaman deals 1 damage to that player.

Once each turn, when you spend mana from a Desert to cast a spell, create a 1/1 red and green Bird creature token with flying and vigilance.
Whenever three or more creatures you control deal combat damage to a player, untap each land you control.

Calfu, Greatest Toqui is all colors.
As long as there are five or more basic land types among lands you control, other creatures you control get +2/+1 and have vigilance.
When Calfu dies, you may search your library for a card named Heart of Caru Mapu, put it onto the battlefield, then shuffle.

(Choose only one work as a sorcery to add its ability.)
When Celebrations of Ferocity enters the battlefield, add {R}{G}. Spend this mana only to cast creature spells.
{4}{R}{R}: Hao'Tai's Wake
At the beginning of combat on your turn, target creature you control becomes a 4/4 red Dragon with flying until end of turn.
{1}{G}: Portrait of Qiyan
Creatures you control enter the battlefield with an additional +1/+1 counter on them.

Whenever you sacrifice a permanent, Champion of Foibles becomes a Demon with base power and toughness 6/6, flying, and trample until end of turn.
{3}{B}: Judge target creature you control. Activate only as a sorcery. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)

When Charming Marauder enters the battlefield, you may destroy target artifact or enchantment.
Recite {2}{W} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters the battlefield or if it would leave the battlefield.)

Flying, haste
Whenever Cheng attacks, look at the top six cards of your library. You may reveal a creature card from among them and put it into your hand. If it's a Dragon, put it onto the battlefield tapped and attacking instead. Put the rest on the bottom of your library in a random order.

[+2]: You may sacrifice a permanent or discard a card. If you do, draw a card.
[–X]: Return target creature card with mana value X or less from your graveyard to the battlefield.
[–8]: You get an emblem with “Whenever a permanent you control dies, return a permanent card with lesser mana value from your graveyard to the battlefield.”

Whenever Cocky Delinquent is dealt damage, you gain that much life and Cocky Delinquent deals that much damage to up to one target creature or planeswalker you don't control.

For each permanent type, choose up to one target permanent of that type. Exile each of those permanents, then return them to the battlefield under your control. They gain haste until end of turn. At the beginning of your next end step, those permanents' owners gain control of them.

Legacy (You may play this side of this card only from your graveyard. Exile it if it would leave the battlefield or not resolve.)
Whenever a Warrior you control becomes the target of a spell or ability an opponent controls, that player loses 1 life and discards a card, then you draw a card and gain 1 life.

When Conflux Ravager enters the battlefield, destroy target nonland permanent an opponent controls.
Cycling {2} ({2}, Discard this card: Draw a card.)

(Add a quest counter as this enters. Sacrifice after 3.)
Whenever you attack with one or more creatures with power 4 or greater, add a quest counter.
1, 2 — Until end of turn, target creature you control gains trample and “Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.”
3 — Put two +1/+1 counters on target creature you control. It fights up to one target creature you don't control.
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Constructed Jay is all colors.
Constructed Jay gets +1/+0 and has flying as long as you control three or more Satrapies.

[+2]: Put two +1/+1 counters or loyalty counters on up to one other target creature or planeswalker.
[0]: Cornrose, the Mighty deals 3 damage to target creature. That creature deals damage equal to its power to Cornrose.
[–2]: Until end of turn, target creature gets +X/+X and gains trample, where X is its power.

Whenever Crescent Crasher attacks, put a +1/+1 counter on target attacking creature with lesser power.

As long as it's your turn, Defect 37 is a 7/7 Vehicle artifact with crew 2.
[+1]: Creatures and Vehicles you control get +1/+1 until end of turn.
[–1]: Put target permanent into its owner's library, third from the top. If Defect 37 is on the battlefield, return her to her owner's hand.
[–6]: Until end of turn, each noncreature, nonland permanent you control becomes a creature in addition to its other types with base power and toughness each equal to their mana value or base power, whichever is greater.

Whenever Defective Abomination attacks, you may sacrifice a permanent. If you do, put a +1/+1 counter on it. It gains indestructible until end of turn.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Disastrous Sirocco deals damage to target creature equal to the number of lands you control.

When Div of Bonded Souls enters the battlefield, create a 1/1 colorless Illusion creature token with “This creature is every creature type.”
Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it.

Haste
When Doomed Alchemist dies, create two Treasure tokens. (They're artifacts with “{T}, Sacrifice this artifact: Add one mana of any color.”)

Vanishing 3 (This permanent enters the battlefield with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Remove a time counter from Dwindling Stores: Add one mana of any color.

When Earthbreaker Behemoth enters the battlefield, it deals damage equal to its power to up to one target creature you don't control. Excess damage is dealt to that creature's controller instead.

Defender, reach
{T}, Discard a card: Create a 0/2 red and green Scarecrow creature token with defender and reach.
{R}{G}, {T}: Embergourd Scarecrow deals X damage to target player or planeswalker, where X is the number of creatures with defender you control.