msem-instigator

Haste
Whenever a nonbasic land becomes untapped, its controller loses 1 life.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Haste
When Inciter of Spirits Scorned enters, return target creature card with mana value 3 or less from your graveyard to the battlefield. It gains haste. Sacrifice it at the beginning of the next end step.

Haste
When Inciting Bard enters, other creatures you control get +1/+0 and gain haste until end of turn.

Each opponent plays with the top card of their library revealed.
During each of your turns, you may play one card from the top of an opponents' library, and you may spend mana as though it were mana of any color to cast that spell.

Whenever Inkwell Daggers enters or attacks, proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

Mill three cards, then you may return a creature or land card from your graveyard to your hand.

When Inspired Blade enters, if you control another Warrior, draw a card.

Untap all creatures you control.
Draw a card.

{T}: Izahl, the Stormbringer deals 1 damage to any target.
Whenever you cast a noncreature spell, you may untap target creature you control.

When Jinyu Mirror-Blade enters, you may exchange its base power with another target creature's base power until either leave the battlefield.

When Joyful Deviant enters or dies, it deals 1 damage to any target.

Return target creature card with mana value 3 or less from your graveyard to the battlefield.

Changeling (This card is every creature type.)
As Kalyn, Wildkin Envoy enters, choose up to three non-Human creature types.
Other creatures you control with one or more of the chosen types get +1/+1.
{2}, {T}: Create a 1/1 colorless Shapeshifter creature token with changeling. Activate only outside of combat.

{W/B}: Kambiro, the Untrue King gets +1/+1 until end of turn.
Whenever a storied permanent you control enters, if you cast it, return target creature card from your graveyard to your hand. If that creature's power is less than Kambiro's power, you may return it to the battlefield instead. (Enchantments and legendary permanents are storied.)

Enchant player
When Kazimir's Inquisition enters, enchanted player chooses four card names.
Whenever enchanted player casts a spell, if it doesn't have one of the chosen names, enchanted player loses 4 life.

Vigilance
If you would take a combat phase or a main phase, take the other instead.
{U/B}, Pay 1 life: Untap target creature you control.

As an additional cost to cast this spell, sacrifice a creature.
Kindle the Cursed deals 3 damage to target creature and 3 damage to that creature's controller.

I — Create a 1/1 green Insect creature token.
II — Create a 2/2 white Cat creature token.
III — Create a 3/3 red Ox creature token.
IV — Creatures you control gain vigilance and indestructible until end of turn.

Tap another untapped creature you control: Knight of the Orchards gets +1/+1 until end of turn.

Whenever a creature token you control deals combat damage to an opponent, it deals that much damage to each other opponent.
At the beginning of combat on your turn, you may sacrifice another creature. If you do, create a 2/2 red, white, and black Knight creature token with haste.

When Kwende Peak Partisan enters, exile the top card of your library. If it's a land card, you may play it this turn.

Choose two —
• Counter all spells that target you, a spell you control, or a permanent you control.
• Creatures get -2/-0 until end of turn.
• Create two 1/1 white Bird creature tokens with flying.
• Draw a card for each card your opponents have drawn this turn.

Lazhu, Whisperflame Seer enters with your choice of a trample or +1/+1 counter on him.
Whenever a creature in Lazhu's pack deals damage to a player or planeswalker, draw a card. (Two or more creatures you control with equal power are in a pack.)

Bleed {B/R} (You may cast this spell for its bleed cost if an opponent has lost life this turn.)
Left for Carrion deals 4 damage to target creature.