msem-instigator

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.)

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

Counter target spell unless its controller pays {1}.

Iron Warden enters with two -1/-1 counters on it.
When Iron Warden dies, you may put its -1/-1 counters on target creature.
{R}: Iron Warden gets +1/+0 until end of turn.

Flash
Vanishing 3 (This permanent enters 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.)
When Judge's Decree enters, exile another target spell or nonland permanent. When Judge's Decree is no longer on the battlefield, the exiled card's owner may cast that card without paying its mana cost.

First strike
Spells can't be cast except during their controller's turns.
Whenever a creature attacks you, Ka Soma deals 1 damage to that creature's controller unless that player pays {1}.

[+1]: Discard a card. If you do, each opponent discards a card and loses 1 life.
[–3]: Destroy target creature or planeswalker.
[–7]: Draw a card for each creature card and planeswalker card in all graveyards. Target opponent loses that much life.

Lifelink
Engage (This creature must be blocked each combat if able.)

Vigilance, lifelink
{1}, Discard a card: Target Soldier creature gains indestructible until end of turn.

Haste
Whenever Keenheart Blade deals combat damage to a player, you may remove a -1/-1 counter from it.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

First strike
Whenever Keeper of the Banner deals combat damage to a player, draw two cards, then discard two cards.

At the beginning of each player's upkeep, that player loses 2 life unless they sacrifice a creature.
{4}{G}: Create a 2/2 green Wolf Elemental creature token.

Creatures you control get +1/+0 for each color among permanents you control and have haste.
Whenever you cast a white, blue, black, or green instant or sorcery spell, copy it for each of its colors. You may choose new targets for the copies.

Target permanent becomes a colorless Mountain land until the beginning of your next upkeep.

Each player chooses a nonland permanent they control, then sacrifices the rest.

Target creature you control deals damage equal to its power to target creature you don't control.

Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.

{3}{G}: Put a +1/+1 counter on Lifecaller Dryad.

Whenever you cast a white spell, create a 1/1 white Nymph creature token.

Whenever Lightseeker Nymph perseveres, search your library for a basic land card, put it onto the battlefield tapped, then shuffle. (A creature perseveres when it survives damage.)

{B}, Sacrifice a creature: Put a +1/+1 counter on Lightwrencher.

Trample
Engage (This creature must be blocked each combat if able.)
When Lion's Vanguard enters, creatures you control get +3/+3 and gain trample and haste until end of turn.

Destroy target artifact or land. If {U} was spent to cast Liquefaction, draw a card.

Tap target creature. Prevent all damage that would be dealt to and dealt by that creature this turn.

Heretic (Whenever you cast a spell that doesn't share a color with this creature, it gets +1/+1 until end of turn.)
{1}{B}: Lost Dancer becomes black and gains lifelink until end of turn.