msem-instigator

Enchant creature
When Shadow Infestation enters the battlefield, enchanted creature's controller loses 2 life.
Enchanted creature gets -1/-1 and can't block.

Sacrifice Shadowfeeder: Target player loses 1 life and you gain 1 life.

Flying, lifelink
Skip your draw step.
Pay 3 life: Draw three cards. Activate only as a sorcery and only once each turn.

Target creature gets -3/-3 until end of turn. If that creature would die this turn, exile it instead.

Put target creature card from a graveyard onto the battlefield under your control. If it doesn't have vanishing, put three time counters on it and it gains vanishing. (At the beginning of your upkeep, remove a time counter from that permanent. When the last is removed, sacrifice it.)

Target player loses 1 life. Scry 1.
Fabled {2}{B} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that player.)

Enchant player
At the beginning of your upkeep, enchanted player loses 1 life.

When Uncovered Mine enters the battlefield and at the beginning of your upkeep, return a random card from your graveyard to your hand.

Whenever another non-Zombie creature you control dies, create a tapped 2/2 black Zombie creature token.
{B}, Sacrifice a creature: Target creature gains deathtouch until end of turn.

When Whistling Blades enters the battlefield, you may destroy target creature or planeswalker.
Recite {1}{B}{B} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters the battlefield or if it would leave the battlefield.)

Target creature gains lifelink or winnow until end of turn. (Damage dealt to it also causes its controller to lose that much life.)
Put the bottom card of your library into your hand.

Flying (This creature can't be blocked except by creatures with flying or reach.)
When Young Tempter enters the battlefield, you draw a card and you lose 1 life.

Attacking creatures you control get +1/+0 until end of turn.
Draw a card.

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

Sacrifice Caravan Merchant: Add {R}{R}.

Flying, haste
When Cataclysmic Skytyrant enters the battlefield, sacrifice all other non-Dragon creatures you control. For each creature sacrificed this way, create a 3/3 red Dragon creature token with flying.

Dancing Flames deals 2 damage to target creature.
Kindle 2—{3}{R} ({3}{R}, Exile this card from your graveyard: Create two 1/1 colorless Elemental creature tokens. Kindle only as a sorcery.)

Destroy target artifact or land.
Kindle 2—{R}, Sacrifice an artifact or land. ({R}, Sacrifice an artifact or land, Exile this card from your graveyard: Create two 1/1 colorless Elemental creature tokens. Kindle only as a sorcery.)

Menace
Sacrifice a creature: Devouring Flame gets +2/+0 until end of turn.

Creature tokens you control get +1/+0.

Spirited (When this creature enters the battlefield, you may activate one of its activated abilities without paying its cost.)
{3}{R}: When target creature dies this turn, create a 2/2 red Dragon creature token with flying and “{R}: This creature gets +1/+0 until end of turn.”

Whenever you cast a noncreature spell, Dynamic Wyvern gains flying until end of turn.

Create X 1/1 red Soldier creature tokens with haste.

Menace
Shimmer (Whenever this creature attacks, create a tapped and attacking token that's a copy of it. Exile the token at the beginning of the end step.)

Gain control of target creature with mana value 4 or less until end of turn. Untap that creature. It gains haste until end of turn.