msem-instigator

When Drop Bear enters, return another target permanent that isn't a land an opponent controls or a card in a graveyard to its owner's hand.

When Drownyard Scavenger enters, each player may return an instant or sorcery card from their graveyard to their hand.

Defender
When Drunau Egg enters, target player mills two cards.
{3}{U}{U}: Transform Drunau Egg. Activate only as a sorcery and only if an opponent has thirteen or more cards in their graveyard.

{T}: Untap target basic land.

Assault {1}{R} (Whenever this attacks, if it has no +1/+1 counters on it, you may pay its assault cost to put a +1/+1 counter on it.)
Whenever a creature you control assaults, creatures you control get +1/+0 until end of turn.

Lifelink
If you would gain life, you gain that much life plus 1 instead.

Whenever Duela Alchemist becomes tapped, catalyze. (The next spell you cast this turn costs {1} less to cast.)
{1}{U}, {T}: Untap another target artifact or creature.

Whenever you cast a spell with mana value 4 or greater, catalyze. (The next spell you cast this turn costs {1} less to cast.)

{3}{R}: Target creature can't be blocked this turn if it's an artifact creature or has power 2 or less.

Dulled Ghost can't be blocked by creatures which have power less than their toughness.
At the beginning of your end step, exile up to one target nonland permanent you control, then return it to the battlefield under its owner's control. If that permanent was tapped, each opponent discards a card.

Lifelink
Vanishing 1 (This creature enters with a time counter on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Whenever another creature you control dies, put a time counter on Dulling Necromancer.

At the beginning of your upkeep, choose one —
• Create a colorless artifact token named Etherium Cell with “{T}, Sacrifice this artifact: Add one mana of any color.”
• Put a +1/+1 counter on another target artifact. It becomes a 0/0 Construct artifact creature if it isn't a creature.

Lifelink
Erratic (When this creature dies, reveal the top four cards of your library. Put a creature card that costs less than this revealed this way onto the battlefield and the rest on the bottom in a random order.)
Mirage {2}{W}{W} (You may cast this spell as though it had flash for its mirage cost. If you do, sacrifice it at the beginning of the next cleanup step.)

Menace
Whenever a creature you control deals combat damage to a player, exile the top card of that player's library. They lose life equal to that card's mana value.

Whenever Dunesea Dreadstalker or another nontoken creature you control dies, amass Soldiers 1. (Put a +1/+1 counter on an Army you control. It's also a Soldier. If you don't control one, create an 0/0 black Soldier Army creature token first.)

Reach
{T}: Add one mana of any color. Spend this mana only to cast an Azra or Demon spell, and that spell can't be countered.

Protection from Dawn Chord (This creature can't be blocked, targeted, dealt damage, or enchanted by anything named Dawn Chord.)
{1}{R}: Target Reflection's base power becomes equal to Dusk Chord's power until end of turn.

Lifelink
{W}{B}, {T}: Dusk Rider deals X damage to target attacking creature, where X is the number of Spirits you control.

Landfall — Whenever a land you control enters, target creature you control gains vigilance until end of turn.

When this creature enters, create a Weapon token, then attach it to a creature you control. (It's an Equipment artifact token with equip {2} and “Equipped creature gets +1/+1”.)
Arise {5}{R} ({5}{R}, Exile this from your graveyard as a sorcery: Create a black token copy of it that's also a Zombie and can't block.)

Flying, haste
When EHSAE, Entelan Skycraft deals combat damage to a player, you may return it to its owner's hand. If you do, you may search your library for an instant or sorcery card, reveal it, put it into your hand, then shuffle.
Crew 3

{T}: Add {G}.

When Earthenlore Disciple enters, you may destroy target artifact, enchantment, or land.

Resolute — At the beginning of combat on your turn, East Ward Halberdier gains double strike until end of turn if its power is greater than its base power.

Flying, haste
Whenever Eavesknocker attacks, another target attacking creature gets +1/+1 until end of turn.