msem-instigator

{T}: Target player mills a card.
{4}, {T}, Exile Dusty Record: Target player shuffles their graveyard into their library.

When Dutiful Counselor enters, adjudicate. (Create a white Aura enchantment token with enchant creature and “Sacrifice this token: Untap enchanted creature” attached to target creature.)
Whenever an Aura you control enters, you may pay {1}. If you do, target creature gets +1/+1 until end of turn.

Whenever you cast an instant or sorcery spell, you may pay {1}. If you do, Dwarven Fireslinger deals 1 damage to each player.

Prowess
Whenever you cast an instant or sorcery spell, if its mana value is less than or equal to Dwarven Twinslinger's power, copy that spell. You may choose new targets for the copy.

When Dylso Charmer enters, if you cast it from exile, create a 2/2 white Cat creature token.
Prophecy {1}{G} (Once each turn, you may exile a card with prophecy as you reveal it. When you do, you may cast it for its prophecy cost as long as it's exiled.)

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

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

First strike (This creature deals combat damage before creatures without first strike.)

{1}{R}: Earnest Labourer gets +2/+0 until end of turn.
{4}{G}: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

{T}: Add {G}.

Enchant creature
Enchanted creature gets +1/+1 for each land your team controls.

Target creature gets +2/+2 until end of turn. If you control four or more lands, that creature gets an additional +2/+2 until end of turn.

{T}: Add {G}.

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

{G}: Each player exiles a card from their graveyard. If an instant or sorcery card is exiled this way, put a +1/+1 counter on Earthfeeder Worm.
Remove X +1/+1 counters from Earthfeeder Worm and sacrifice it: Exile X target cards from graveyards.

Prowess
Vanishing 2 (This creature enters with two time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)
{1}{W}: Target creature and all creatures with the same name as that creature get +0/+1 until end of turn.

First strike
Sacrifice Echo Striker: Target creature gains double strike until end of turn.

Target permanent and all other permanents with the same name as that permanent gain indestructible until end of turn.

Draw a card.
Reprise {2} (As you cast an instant or sorcery spell, you may exile one card with reprise from your graveyard and pay its reprise cost. If you do, add its effects to that spell.)

Target creature and all creatures with the same name as that creature get +2/+1 and gain lifelink until end of turn.

Counter target spell and each other spell with the same name as that spell.

Destroy target artifact or enchantment and all other permanents with the same name as that permanent.

Echoing Thunder deals 3 damage to target creature and all other creatures with the same name as that creature.