msem-instigator

Vigilance, trample
When Border Guardian enters the battlefield, return a creature you control to its owner's hand.

Rouse 2. Target permanent gains trample until end of turn if it's a creature. (Distribute two +1/+1 counters among permanents you control. If they aren't creatures, tap them and they become 0/0 creatures in addition to their other types.)

{T}: Add {C}.
{1}, {T}: Add {R}{G}.

Equipped creature has indestructible as long as it's your turn.
Whenever equipped creature attacks, it gets +X/+0 until end of turn, where X is its power.
Equip {6}

Brutal Struggle deals 2 damage to any target. Put a +1/+1 counter on up to one target creature.

Whenever another creature enters the battlefield, Brutish Champion fights that creature.

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.

Calamitous Rampage deals 5 damage to any target.
Cycling {G} ({G}, Discard this card: Draw a card.)

{T}, Pay 1 life: Add {R} or {G}.
{2}, {T}, Sacrifice Capital Towpath and another permanent: Draw a card. Activate only during your turn.

(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.

Chartered Treasury enters tapped.
When Chartered Treasury enters the battlefield, look at the top card of your library. You may put it into your graveyard.
{T}: Add {R} or {G}.

(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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[+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.

Up to one target creature you control has base power 4 until end of turn. (Then exile this card. You may play the land later from exile.)

({T}: Add {R} or {G}.)
As Dangerous Territory enters the battlefield, you may pay {1}. If you don't, Dangerous Territory enters the battlefield tapped.

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.

Descended Gorge enters the battlefield tapped.
{T}: Add {R} or {G}.
Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Sacrifice a land: Desperate Ravager gets +2/+0 and gains haste 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.

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.

{1}{R}: Earnest Labourer gets +2/+0 until end of turn.
{4}{G}: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

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.