msem-instigator

Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)
Counter target creature spell. If this spell was kicked, create a 1/1 colorless Thopter artifact creature token with flying.

Spells you cast from anywhere other than your hand cost {1} less to cast.
At the beginning of combat on your turn, another target Pirate or Rogue you control gets +X/+0 and gains haste until end of turn, where X is the number of noncreature spells you've cast this turn. That creature can't be blocked this turn.

Whenever a creature you control leaves the battlefield, you may pay {1}. If you do, scry 1.
{3}{U}, Return a creature you control to its owner's hand: Draw a card.

Target creature gets +2/+0 and gains first strike until end of turn. If it's attacking a battle, it gains double strike until end of turn.

Glorious end — When Warband Commander dies, if it was tapped, put a +1/+1 counter on each creature you control that attacked this turn.

Choose target artifact, creature or planeswalker. If this spell was foretold, you may destroy it. Create a token that's a copy of it except it isn't legendary, has haste and “At the beginning of the end step, sacrifice this permanent.”
Foretell {B}{B}{R} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

At the beginning of combat on your turn, you may attach target Equipment you control to Nina, Master of Arms.
Whenever Nina attacks, the next artifact spell you cast this turn costs {R/W}{R/W} less to cast. (This can reduce the amount of generic mana you pay.)

(Add a quest counter as this enters. Sacrifice after 3.)
Whenever a creature you control enters, add a quest counter.
1, 2 — Create a Treasure token.
3 — Creatures you control get +2/+2 and gain trample and haste until end of turn.
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{T}: Add {R}.
{R}, {T}: Target creature gains haste until end of turn.

Return up to one target creature or planeswalker card with mana value 3 or less from your graveyard to the battlefield. Creatures you control get +1/+1 until end of turn.

Chosen one ({W}{U}{B}{R}{G}: Transform this permanent.)
When Sower of Wishes enters, reveal the top three cards of your library. Put all land cards revealed this way into your hand and the rest back on top in any order.

Enchant creature
When Sting of the Manticore enters, scry 2.
Enchanted creature gets +1/+0 and has deathtouch.

Equipped creature gets +1/+1.
As long as equipped creature is multicolored, it gets an additional +1/+1.
Equip {1}

Lifelink
When Telarine Runecarver enters, create a white Aura enchantment token named Relic's Gift attached to target creature. The token has enchant creature and “Enchanted creature gets +1/+1.”

Reach
{G}, Sacrifice Fencas: Search your library for a land card, reveal it, put it into your hand, then shuffle.
At the beginning of your end step, if you control seven or more lands, return this card from your graveyard to the battlefield.

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

Whenever you conjure a card, if its name isn't noted for Neural Dreams, you may note its name.
Spells you cast with a name noted for Neural Dreams cost one mana of any color less to cast. (If it doesn't have a colored mana symbol in its cost, it costs {1} less.)

As long as you control three or more artifacts, Treasury Master gets +2/+0 and has slipstream. (This creature can't be blocked as long as only creatures with slipstream are attacking.)

{3}, {T}, Sacrifice Punja Stick Trap: Punja Stick Trap deals 2 damage to target creature. Tap it.

Concord — Whenever Bubbledome Captain attacks, if there are four or more card types among permanents you control, each other attacking creature gets +1/+1 until end of turn.

Search your library for a land that doesn't have the same name as a land you control, reveal it, put it into your hand, then shuffle. (Then exile this card. You may cast the creature later from exile.)

Flying

Target creature gains winnow until end of turn if you attacked this turn. Searing Insult deals 2 damage to that creature. (Damage dealt to it also causes its controller to lose that much life.)

At the beginning of your upkeep, discard a card and create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)

Target player sacrifices a nontoken creature and mills three cards.