msem-instigator

Counter target spell.
You may draw four cards. If you do, skip your next turn.

This spell costs {3} more to cast if it targets a card in an opponent's graveyard.
Choose target creature or planeswalker card in a graveyard that was put there from the battlefield this turn. Put that card onto the battlefield under your control.

{T}: Add {G}.
Dominance — {T}: Add {G}{G}. Activate only if you control the creature with the greatest power or tied for the greatest power.

Ferried Stagecoach can't be blocked as long as another creature is attacking.
Whenever Ferried Stagecoach deals combat damage to a player, each player flips a coin. Each opponent that loses the flip discards a card, and each player on your team that wins the flip draws a card.

When Forest Whale dies, put a number of +1/+1 counters on target creature you control equal to Forest Whale's power.

Whenever you draw a card except for the first one you draw in each of your draw steps, each opponent loses 1 life.

Return target creature card from your graveyard to the battlefield. If you control a Demon, each opponent loses 3 life.

Reverberate {3}{U} (When you cast this spell, copy it if you paid its reverberate cost.)
If Violent Spasm is reverberated, creatures you control gain flying until end of turn. Violent Spasm deals 1 damage to each creature without flying.

Whenever Open Road or another permanent you control enters, if it has the greatest mana value among permanents you control, you may discard a card. If you do, draw a card.

Eureka! (At the beginning of each end step, you get a research counter if you cast a spell this turn. Then if you have eight or more research counters, remove them and create a Masterpiece token of your choice.)
[+1]: Untap up to one target artifact you control.
[–2]: Draw three cards. Then discard two cards unless you discard an artifact card.

{T}: Add {R} or {W}.
{T}, Sacrifice Sigil of Brutality: Add {R}{W}.

Equipped creature gets +2/+2.
Whenever equipped creature attacks, the next time an instant or sorcery source you control would deal damage to a creature, player, or planeswalker this turn, it deals that much damage plus 2 instead.
Equip {2}

Creatures you control get -3/-3.
Whenever a creature you control dies, put a soul counter on Remake the Cast.
Creatures you control get +1/+1 for each soul counter on Remake the Cast.

Flash
Enchant creature
Enchanted creature gets +2/+2 and has flying and “At the beginning of your upkeep, you lose 1 life and create a 1/1 black Harpy creature token with flying.”

Post a bounty on target creature you don't control, then each opponent sacrifices a creature. (Put a bounty counter on that creature. It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

Deathtouch
Invocation — Whenever you spend four or more mana to cast a spell or activate an ability during your turn, untap Killer Scorpion.

Return up to one target permanent card and up to one target Horror card from your graveyard to your hand.

Exile the top three cards of your library. For each land card exiled this way, create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.” Until the end of your next turn, you may cast nonland cards exiled this way.

{T}: Untap target basic land.

Flying (This creature can't be blocked except by creatures with flying or reach.)
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.)

Crew 4 (Tap any number of creatures you control with total power 4 or greater: This Vehicle becomes an artifact creature until end of turn.)

Lifelink
{2}{W}: Target Elk gains indestructible until end of turn.

Draw X cards, where X is the number of differently named lands you control.

Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)
When Soul Trapper enters, tap target creature an opponent controls. That creature doesn't untap during its controller's untap step for as long as you control Soul Trapper.

First strike
Other Rogues you control get +1/+0 and have first strike.
{2}, Sacrifice a permanent: Return target Rogue card from your graveyard to your hand.