msem-instigator

Destroy target creature with flying. (Then exile this card. You may cast the creature later from exile.)

Whenever you cast an instant or sorcery spell, put a +1/+1 counter on Kederekt Seawitch, then scry 1.

Flash
When Odaya Magistrate enters, you may counter target noncreature spell.

{1}, Sacrifice Brackwater Scuttler: Draw a card.

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

Scry 3, then reveal the top card of your library. Target creature gains trample and gets +X/+X until end of turn, where X is that card's mana value.

Nizev Sanctuary enters tapped.
Satrapies you control have “{T}: Add {U} or {R}.”

Desert Wurms can't be blocked by creatures with flying.
When Desert Wurms enters, create two 6/6 red Wurm creature tokens with “This creature can't be blocked by creatures with flying.”
When Desert Wurms is put into a graveyard from anywhere, shuffle it into its owner's library.

Lifelink
Creature and Aura cards with mana value 3 or less in your graveyard have revive {2}{W/B}. ({2}{W/B}, Exile that card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Enchant land (Target a land as you cast this. This card enters attached to that land.)
Enchanted land has “{T}: Add one mana of any color” and “At the beginning of each upkeep, untap this land.”

Target creature gets +1/+3 until end of turn. (Then exile this card. You may cast the creature later from exile.)

When Bayou Courier enters, you may pay 2 life. If you do, create a 3/2 green Crocodile creature token with trample.

{T}, Pay 1 life: Add {U} or {B}.
{2}, {T}, Sacrifice Weathered Wharf and another permanent: Draw a card. Activate only during your turn.

{T}: Draw a card. Activate only if you created a token this turn.

Flying, lifelink
Whenever a creature you control dies, Vindictive Regent gets +1/+1 until end of turn.
At the beginning of your end step, if you gained 3 or more life this turn, each opponent sacrifices a creature.

Look at the top two cards of your library. Put one into your graveyard and the other back on top.

Vigilance
{T}: Add {G}.

Equipped creature has menace.
Equip {0} ({0}: Attach to target creature you control. Equip only as a sorcery.)

First strike, haste
When Mounted Marksman enters, it deals 2 damage to target creature you don't control.

Whenever Vanguard of the Barricade attacks, tap up to one target creature defending player controls and untap up to one other target creature you control.

Enchant creature
When Eternal Banishment enters, put a +1/+1 counter on enchanted creature.
Remove a +1/+1 counter from enchanted creature: Exile target creature an opponent controls until Eternal Banishment leaves the battlefield. Activate only as a sorcery.

When Beguiling Witch enters, nourish 1. (To nourish 1, either put a +1/+1 counter on this creature or create a 1/1 white Citizen creature token.)
Whenever another creature dies, each opponent mills X cards, where X is Beguiling Witch's power.

{1}, {T}, Sacrifice Soul-Synthesizer: Look at the top seven cards of your library. You may reveal a card with an activated ability from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
When Ushi Yun enters, create an Idol token.
As long as you're in a renaissance, artifacts you control have “{T}: Draw a card.”

When Dragon-Forged Armor enters, exile a creature card from a graveyard.
Equipped creature gets +X/+Y, where X is the power of the last creature card exiled with Dragon-Forged Armor and Y is its toughness.
Equip {2}