msem-instigator

Exile target creature. Search its controller's graveyard and library for any number of cards with the same name as that creature and exile them. Then that player shuffles.

Whenever Copse Crusher becomes blocked by one or more creatures, it gets +2/+2 until end of turn for each creature blocking it.

When Irreverent Sinscape enters, destroy up to one other target nonland permanent.
When Irreverent Sinscape dies, exile it. When you do, you may exile any number of cards from your graveyard that have four or more card types among them. If you do, return a permanent card from a graveyard to the battlefield under your control. You may repeat this process any number of times.

Target creature gets +2/+2 and gains menace until end of turn.

Equipped creature has “Whenever this creature attacks, you may sacrifice Torch of Phoenixfire. When you do, Torch of Phoenixfire deals 3 damage to any target.”
Equip {1}

When Pyroclastic Maw enters, destroy target land. If that land was nonbasic, Pyroclastic Maw gains haste until end of turn.

Hexproof
Augmented — At the beginning of each end step, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, untap up to three permanents. Then you may shuffle your hand into your library. If you do, draw three cards.

Whenever you cast a creature or planeswalker spell, if mana produced by a nonland permanent was spent to cast it, it gains trample and haste until end of turn.
{T}: Add {R} or {G}.

Destroy all creatures. Each player creates a tapped colorless land token named Lotus Spring with “{T}: Add one mana of any color.”

Flash
Whenever you cast an artifact or enchantment spell, put a +1/+1 counter on Observer of Secret Paths. It can't be blocked this turn.

Enchant creature
Enchanted creature can't attack.
Civilized — Enchanted creature can't block and its activated abilities can't be activated if you control an artifact, a creature, and an enchantment.

Reverberate {1}{U} (When you cast this spell, copy it if you paid its reverberate cost. You may choose new targets for the copy.)
Until end of turn, target creature loses all abilities and becomes a blue Elemental with base power and toughness 3/3.

Whenever you or a creature you control become the target of a spell or ability an opponent controls, that opponent gets a spite counter.

Flying
When High Spirits enters, target creature gains flying until end of turn.

Flying
At the beginning of your end step, untap another target creature you control.

Flying, lifelink
Sacrifice a creature: Until end of turn, Turned Watcher gets +1/+0 and gains “Whenever Turned Watcher deals combat damage to a player, draw a card.”

Flash (You may cast this spell any time you could cast an instant.)
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

{U}, {T}: You may tap or untap another target creature.
Whenever one or more other creatures you control deal combat damage to a player, you may untap Riverchase Diver.

Archive 5 (As this enters, shuffle the top five cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever a permanent card is put into your graveyard from the battlefield, you may put that card on the bottom of the archived library.

Flying, lifelink, haste
At the beginning of the end step, sacrifice Helix Entity.

When Relearn History enters, draw two cards.
You have no maximum hand size.

Prowess
When Grasper of Secrets enters, choose one —
• Return target creature to its owner's hand.
• Return target instant or sorcery card from your graveyard to your hand.
Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Take an extra turn after this one. Exile Look to the Future.
Civilized — If you control an artifact, a creature, and an enchantment, until the end of your next turn, you may look at the top card of your library any time and you may play the top card of your library.

Surging Lightning deals 2 damage to target creature or planeswalker. If you've cast another spell this turn, it deals 4 damage instead.

As Moonlight Sanctum enters, choose Waxing or Waning.
• Waxing — At the beginning of your upkeep, you gain 1 life for each enchantment you control.
• Waning — Nonenchantment spells cost {1} more to cast.