msem-instigator

Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated.

Flying
Whenever Pledged Griffin attacks, another target attacking creature gains flying until end of turn.

Alpha (You may have this creature enter with a +1/+1 counter on it. If you do, it becomes alpha and can only attack alone.)
Trample

(Add a quest counter as this enters. Sacrifice after 3.)
Whenever an opponent loses 3 or more life, add a quest counter.
Destroy up to one target creature with power or toughness 2 or less.
Create Sir Jasper Reborn, a legendary 3/1 black Zombie Mouse Knight creature token with menace.
Search your library for a card, reveal it, put it into your hand, then shuffle. If you revealed a card named Karoa's Downfall this way, you may cast it without paying its mana cost.

{T}: Plucky Pickpocket voyages. (If it isn't blocking or targeted by another spell or ability, it phases out.)
Whenever Plucky Pickpocket phases in, draw a card, then discard a card.

Harmony — Creatures you control get +1/+0 and gain vigilance until end of turn.
When Plume de Val Singer enters, harmonize. (Trigger up to one harmony of one permanent you control.)

Equipped creature gets +2/+1 and has flying.
Equip {3}

Destroy target creature with flying.

Mill X cards. Then you may return a creature card with mana value X or less from your graveyard to the battlefield.

If a player has lost life this turn, this spell has flash and can't be countered.
Destroy target tapped creature.

Advance {3}{W} (Cast this for {3}{W} to advance it as it enters. {3}{W}: Advance this as a sorcery.)
At the beginning of your upkeep, you gain 1 life.
Whenever Plush Tea Party advances, create a token that's a copy of it.

Enchant creature
Enchanted creature has infiltrate. (Whenever one or more attacking creatures you control aren't blocked, enchanted creature gets +1/+1 until end of turn.)
Whenever enchanted creature deals combat damage to a player, draw a card.

Reveal up to four cards you own from outside the game with the same name, then shuffle them into your main library.
Draw a card.

Whenever Poignant Hydra deals combat damage to a player, put a +1/+1 counter on it.
Creature spells you cast with power less than Poignant Hydra's power cost {1} less to cast.

This spell costs {2} less to cast if you control a creature with power 4 or greater.
Target creature gets +2/+0 and gains first strike and trample until end of turn.

Put two +1/+1 counters on target creature you control. When you do, it deals damage equal to its power to up to one target creature with flying.

You may cast cast up to two target instant and/or sorcery cards with total mana value 6 or less from your graveyard without paying their mana costs. If a spell cast this way would be put into your graveyard, exile it instead.
Exile Pointer Churn.

Whenever Poised Koi attacks or blocks, look at the top two cards of your library, put any of them into your graveyard, then the rest back on top in any order.

Target creature gains deathtouch until end of turn. If that creature is an Insect, it gains first strike until end of turn.

Target creature gains deathtouch and indestructible until end of turn.

Poisonblade Elite enters with three -1/-1 counters on it.
Whenever Poisonblade Elite becomes blocked, you may move a -1/-1 from it onto target creature blocking it.

When Poisonblade Herald enters, put a -1/-1 counter on a creature you control.

{B}{G}, {T}, Remove a -1/-1 counter from a creature you control: Create a 1/1 green Elf Druid creature token.

Poisonblade Trainee enters with a -1/-1 counter on it.