msem-instigator

Flying
At the beginning of your upkeep, you may pay {1}. If you do, put a +1/+1 counter on Swarm of the Dispossessed.
Sacrifice Swarm of the Dispossessed: Counter target spell with mana value X, where X is the number of +1/+1 counters on Swarm of the Dispossessed.

Swarming Midden enters tapped unless you control a basic Swamp.
{T}: Add {B}.
{1}{B}{B}: Swarming Midden becomes a 2/3 black Rat creature with menace until end of turn. It's still a land. Whenever it attacks this turn, create a 1/1 black Rat creature token with “This creature can't block.”

Choose up to one nonland permanent. Return the rest to their owners' hands.

At the beginning of combat, each player chooses a creature. Those creatures attack or block this turn if able. Whenever one of those creatures dies this turn, Sweep Stakes deals 3 damage to that creature's controller.

Exile target spell or creature. For as long as it remains exiled, its controller may cast that card, and it costs {2} more to cast.

At the beginning of your upkeep, put a charge counter on Swell of Birth, then create a 1/1 colorless Elemental creature token for each charge counter on it.

At the beginning of your end step, put a flood counter on Swelling Sea, then return each nonland permanent with mana value less than or equal to the number of flood counters on Swelling Sea to its owner's hand.

Create two 1/1 red Soldier creature tokens with haste.
Creatures you control get +1/+1 until end of turn.

First strike
Whenever Ren deals combat damage to a player, you may activate one of her abilities by paying 3 life rather than paying its cost.
{1}{R}, Discard a card: Draw a card.
{2}{B}, Sacrifice a creature: Each opponent sacrifices a creature.

Reach
{G}, {T}: Swiftshot Sniper deals damage equal to its power to each creature with flying.
{2}{G}: Swiftshot Sniper gets +2/+2 until end of turn. Activate no more than twice each turn.

Flying
Whenever Swiftwing Sphinx or another creature with flying deals combat damage to an opponent, put a +1/+1 counter on that creature.

Whenever you cast a red spell, create a 2/1 red Merfolk creature token.
Whenever you cast a green spell, target creature gets +2/+2 and gains trample until end of turn.

This spell can't be countered.
Flying, menace, haste
Ward—Sacrifice a creature. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player sacrifices a creature.)

Sword deals 2 damage to any target.
Fuse (You may cast one or both halves of this card from your hand.)

Equipped creature gets +2/+2 and has protection from blue and from black. (It can't be targeted, dealt damage, enchanted, or equipped by anything blue or black.)
Whenever equipped creature deals combat damage to a player, Sword of Fanaticism deals 3 damage to up to one target creature and you gain 3 life.
Equip {R}{W}

Equipped creature gets +2/+2 and protection from black and from red.
Whenever equipped creature deals combat damage to a player, that player loses 3 life unless they discard a card or sacrifice a nonland permanent. You discard a card, then you draw two cards.
Equip {2}

Equipped creature gets +2/+2 and has protection from green and from white.
Whenever equipped creature deals combat damage to a player, you may reveal the top five cards of your library. Put a creature card revealed this way into your hand, then put the rest into your graveyard. Destroy up to one target enchantment.
Equip {2}

Equipped creature gets +2/+2 and has protection from mana value 2 or less and from mana value 6 or greater.
Whenever equipped creature deals combat damage to a player, create a Food token and two Treasure tokens.
Equip {2}

Whenever equipped creature deals combat damage, you may return target creature card with mana value X or less from your graveyard to the battlefield, where X is the amount of damage dealt this way.
Equip {1}

Equipped creature gets +2/+2 and has protection from colorless and from multicolored. This effect doesn't remove Sword of Silver and Gold. (This permanent can't be targeted, dealt damage, enchanted, or equipped by anything colorless or multicolored.)
Whenever equipped creature deals combat damage to a player, you create a 2/2 colorless Spirit creature token and that player exiles the top three cards of their library.
Equip {2}

Equipped creature gets +2/+2 and protection from blue and from black.
Whenever equipped creature deals combat damage to a player, return up to one target creature card and up to one target instant or sorcery card from your graveyard to your hand.
Equip {2}

Equipped creature gets +2/+2 and has protection from white and from blue.
Whenever equipped creature deals combat damage to a player, until your next turn, spells that player casts cost {1} more to cast and spells you cast cost {1} less to cast.
Equip {2}

Equipped creature gets +2/+1.
Whenever a creature you control enters, you may have equipped creature gain your choice of flying, vigilance, first strike or trample until end of turn.
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)

When Sword of the Heavens enters, attach it to target creature you control.
Equipped creature gets +2/+2 and has flying, vigilance, and “Whenever this creature attacks, you may search your library and/or graveyard for an Aura or Equipment card, reveal it, put it into your hand, then shuffle.”
Equip {3}

First strike
When Sworn Cohort dies, you may search your library for a legendary card, reveal it, put it into your hand, then shuffle.