msem-instigator

First strike, menace
When Zhargetan Reclaimer enters, put any number of cards your opponents own from exile into their owners' graveyards. If three or more cards were put into graveyards this way, create two 1/1 Scout creature tokens that are all colors.

Haste
Whenever Shala's Phantasm attacks, you may sacrifice a creature. If you do, Shala's Phantasm deals 3 damage to any target.

(Choose only one work as a sorcery to add its ability.)
When Celebrations of Ferocity enters, 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 with an additional +1/+1 counter on them.

Converge — You draw X cards and gain X life, where X is the number of colors of mana spent to cast Animus Vox.

(Add a quest counter as this enters. Sacrifice after 3.)
1, 2 — Whenever you attack with exactly two creatures, add a quest counter.
3 — Reveal the top four cards of your library. You may put a creature card from among them into your hand. Put the rest on the bottom in a random order.
Put two +1/+1 counters on each of up to two target creatures you control.

Sacrifice Indomitable Bear: Creatures you control gain indestructible until end of turn.

Royster Hounds can't be blocked by creatures with power 2 or less.

Flying, vigilance, lifelink
Idyllic Pegasus gets +1/+0 for each artifact and/or enchantment you control.

Once each turn, when a player loses life, you may harmonize. (Trigger up to one harmony of a permanent you control.)
Harmony — Each opponent loses 1 life and you gain that much life.

{T}: Add {C}.
{T}: Add one mana of any color. Activate only if you control a transformed permanent.

Enchant creature
When Divine Lockdown enters, tap target creature.
Enchanted creature doesn't untap during its controller's untap step.

Noncreature spells your opponents cast cost {1} more to cast.
Unveil {2}{W}{U} ({2}{W}{U}: Transform this. Unveil only as a sorcery.)

({T}: Add {W}.)
Sunstage enters tapped.
When Sunstage enters, creatures you control get +0/+1 until end of turn.

Energize deals 3 damage to any target.
Catalyze. (The next spell you cast this turn costs {1} less to cast.)

Haste (This creature can attack and {T} as soon as it comes under your control.)
Olson's Sky Brigade has flying as long as you control another attacking Pirate.

Equipped creature has first strike.
{R}: Equipped creature gets +1/+0 until end of turn.
Equip {2}

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

Whenever you cast a spell, draw a card if that spell has the same name as a card in your graveyard.

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)
Rafter Stalker can't be blocked by creatures with greater power.

Enchant creature
When Valorous Ideal enters, target creature can't block this turn.
Enchanted creature gets +2/+0 and attacks each combat if able.
When Valorous Ideal is put into a graveyard from the battlefield, return Valorous Ideal to its owner's hand.

Deathtouch
{2}{G}: Transform Adderblade Exterminator. Activate only if it's attacking.

Reach
{2}{G}, {T}, Sacrifice this creature: It deals 4 damage to target creature with flying.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell or activate an ability of a creature.
Whenever a creature you control becomes a Demigod or God, untap Terracotta Sage and it becomes a 4/4 Dragon with flying until end of turn.

Fox of the Fallen Forest gets +4/+0 as long as you control a legendary creature.

Concord — When Riptide Mystic enters, if there are four or more card types among permanents you control, you may return target nonland permanent to its owner's hand.