msem-instigator

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.

Investigate, then target creature gets -1/-1 until end of turn for each Clue you control. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Until end of turn, creatures you control gain “When this creature dies, return a noncreature card from your graveyard to your hand.”

When Dylso Charmer enters the battlefield, 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.)

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

Each land doesn't untap during its controller's next untap step.

At the beginning of combat on your turn, you may sacrifice a creature. If you do, creatures you control get +2/+1 until end of turn.

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.

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.

When Edge of the World enters the battlefield, each player draws a card.
{T}: Each player adds {C}.

{W}{B}, {T}: Exile target nonland permanent until Ediam, the Inside Man leaves the battlefield. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any type to cast that spell.

{0}: Until end of turn, Eldritch Egg becomes a copy of target permanent card in a graveyard with mana value 6 or less except it's an artifact. Activate only once each turn. (It has no other card types.)

Primal {U} (During your turn, you may cast this spell for {U} instead of playing a land.)
Counter target spell.

Elrayin, the Manaroot enters the battlefield tapped.
Whenever you tap another land for mana, put a creation counter on Elrayin.
{T}, Remove ten creation counters from Elrayin and sacrifice it: Untap all lands target player controls.

{1}, {T}: Exile target creature you control until Elsewhere Mirror leaves the battlefield. (It returns to the battlefield under its owner's control.)
{3}: Choose a permanent card exiled with Elsewhere Mirror. Target creature becomes a copy of that card until end of turn.

If a permanent would deal damage to Elusive Fatecrafter, instead prevent that damage and exchange control of Elusive Fatecrafter and that permanent.

{1}{U}: Exile Elusive Monkey. Return it to the battlefield under its owner's control at the beginning of the next end step.

When Elven Guard becomes the target of a spell you control, you may pay {G}. If you do, transform it.

{1}: Look at the top card of your library.
{G}, {T}, Mill a card: Untap another target creature.

At the beginning of combat on your turn, look at the top card of your library. You may reveal it. If you do, target creature gets +X/+X until end of turn, where X is the revealed card's mana value.