msem-instigator

Double strike
When this creature enters, mill four cards. Put a creature card with power 2 or less from among the cards milled this way into your hand.

Flying, lifelink
Skip your draw step.
Pay 3 life: Draw three cards. Activate only as a sorcery and only once each turn.

{G}, Tap an untapped Nymph you control: Overgrown Beast gets +2/+2 until end of turn.

{T}, Pay 1 life: Add {U}.
{4}{U}{U}{U}, Exile The Aurora's Heart from your hand: Target player draws seven cards.

{T}, Pay 1 life: Add {B} or {R}.
{1}, {T}, Sacrifice Grim Slums: Investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

First strike
Whenever Martial Maestro attacks, other attacking creatures you control get +1/+0 until end of turn.

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards. You gain 2 life.

{R}, Discard a card: Target creature blocking Scaled Mindreaver gains winnow until end of turn. (Damage dealt to it also causes its controller to lose that much life.)

Target creature gets -2/-2 until end of turn. If you control two or more Deserts, destroy that creature instead.

When Gruff Smith enters, you may destroy target artifact. If you do, that artifact's controller creates a colorless Equipment artifact token with “Equipped creature gets +1/+1” and equip {1}.
Recite {1}{R} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters or if it would leave the battlefield.)

Each Rogue you control can't be blocked by creatures with greater power than it.
Whenever a Rogue deals combat damage to a player, gain control of target nonland permanent that player controls unless that player pays {1}.

Flying, vigilance
When you unveil Graced Theurge, draw a card.

Whenever an opponent casts a spell, if no mana was spent to cast it or it has mana value greater than the number of lands that player controls, counter that spell.
{G/W}, Sacrifice this creature: Citizens and Peasants you control get +1/+1 and gain indestructible until end of turn.

If a source you control would deal noncombat damage, it deals double that damage instead.

Flying
When Sable Hoopoe enters, draw a card.

When Transcended Explorer enters, if you control another enchantment, draw a card.

{G}, Exile a creature card from your graveyard: Put two +1/+1 counters on target creature.

When Host of Nature enters, create two 2/2 red and green Elk creature tokens.

Look at target opponent's hand. You may cast a card from that player's hand or graveyard, and you may spend mana as though it were of any type to cast that card. If you cast a card from that player's hand this way, that player draws a card.

Desecrate (When this creature enters, you may sacrifice an artifact or land.)
When Back-Alley Vandal desecrates a permanent, put a +1/+1 counter on Back-Alley Vandal.

When Street Performer enters, create a 2/1 blue Illusion creature token with “When this creature becomes the target of a spell or ability, sacrifice it.”

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{5}{U/B}{U/B}: Gain control of target creature with mana value 3 or less until Dollmaster leaves the battlefield.

Choose target creature you control and target creature you don't control. Flip a coin. If the coin comes up heads, put one of those creatures on top of its owner's library. Otherwise, put both of them on top of their owners' libraries.

Return target nonland permanent to its owner's hand. You get a glory counter. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

Enchant creature
Enchanted creature gets +3/+1.