msem-instigator

Kicker {2}{B} (You may pay an additional {2}{B} as you cast this spell.)
Flying
When Heartstabber Mosquito enters the battlefield, if it was kicked, destroy target creature.

Each player exiles up to X cards from their graveyard. Then each player loses life, discards cards and sacrifice creatures equal to X minus the number of cards that player exiled this way.

Whenever a creature you control dies, you may put a +1/+1 counter on target creature you control.

Whenever a creature you control dies, Insidious Terror gets +1/+0 and gains menace until end of turn.

Choose two —
• Each opponent sacrifices a creature.
• Each player discards two cards.
• All creatures get -1/-1 until end of turn.
• You draw two cards and you lose 2 life.

Until end of turn, you may play cards from your graveyard by paying 2 life in addition to those cards' costs.
If a card would be put into your graveyard from anywhere this turn, exile that card instead.

As an additional cost to cast this spell, tap an untapped artifact you control.
Target player discards two cards.

Flying (This creature can't be blocked except by creatures with flying or reach.)
As long as Nightclad Stalker is enchanted, it gets +1/+0 and has deathtouch and lifelink.

Destroy target creature. Create a tapped 2/2 black Zombie creature token.

Menace (This creature can't be blocked except by two or more creatures.)
Whenever a creature blocks, its controller loses 1 life.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When Poisonheart Undead enters the battlefield, you draw a card and you lose 1 life.

When Ragantiar enters the battlefield, mill five cards.
{3}{B}, Sacrifice a creature: Return target creature card with power X or less from your graveyard to the battlefield, where X is 1 plus the sacrificed creature's power.

Kicker {3} (You may pay an additional {3} as you cast this spell.)
Return target creature card from your graveyard to your hand. Then if this spell was kicked, return another target creature card from your graveyard to your hand.

When Scrapyard Aberration enters the battlefield, you may sacrifice another artifact. If you do, target creature gets -2/-2 until end of turn.

Target player discards two cards. If a creature you control died this turn, that player loses 2 life.

When Seven Deadly Sins has seven or more sin counters on it, sacrifice it.
{B}{B}, Put a sin counter on Seven Deadly Sins: Destroy target creature. This ability costs {1} more to activate for each sin counter on Seven Deadly Sins.

Sacrifice a creature: Soulsorrow Shade gets +2/+2 until end of turn.

Menace (This creature can't be blocked except by two or more creatures.)
When Spawn of Shadows enters the battlefield, each player loses 4 life.

As an additional cost to cast this spell, sacrifice a permanent.
Sporesowed Disease deals 3 damage to any target and you gain 3 life.

Whenever another artifact is put into your graveyard from the battlefield, each opponent loses 1 life and you gain 1 life.

Flying
{2}{B}, Sacrifice another creature: Target creature gets -3/-3 until end of turn.

When Vile Weavers enters the battlefield, if you control an enchantment, target player loses 3 life.

If a creature would die this turn, exile it instead.
All-Consuming Fire deals 4 damage to each creature.

Kicker {1}{R} (You may pay an additional {1}{R} as you cast this spell.)
Attacking creatures get +2/+0 until end of turn. Those creatures also gain first strike until end of turn if this spell was kicked.