msem-instigator

Until end of turn, target creature loses all abilities and has base power and toughness 1/1. If it's attacking, counter all triggered abilities from that source.

Flash
Enchant artifact or creature
Enchanted permanent is an artifact with “{T}: Draw a card, then discard a card” and loses all other card types and abilities.

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.

Choose one —
• Target creature gets +0/+3 until end of turn.
• Exile target creature you control. For as long as it remains exiled, you may cast it, and it costs {2} less to cast.

Choose one —
• Scry 3. Draw a card.
• Fateseal 3. That player draws a card. (To fateseal 3, look at the top three cards of an opponent's library, then put any number of them on the bottom of that player's library and the rest on top in any order.)

Create two 1/1 blue Bird creature tokens with flying and “When this creature dies, draw a card.”

Target creature gets -5/-0 until end of turn. (Then exile this card. You may cast the creature later from exile.)

Choose one —
• Counter target spell unless its controller pays {2}.
• Tap target creature. It doesn't untap during its controller's next untap step.

Enchant creature
Enchanted creature can't be blocked.
{1}{G}: Enchanted creature gets +1/+1 and gains hexproof until end of turn.

Escalate—Return another spell you control to its owner's hand. (Pay this cost for each mode chosen beyond the first.)
Choose one or both —
• Draw a card.
• Draw a card.

Up to two target creatures each get -3/-0 until end of turn. Tap those creatures. They don't untap during their controller's next untap step.

Creatures your opponents control get -2/-0 until end of turn.
Draw a card.

Surveil 2, then draw three cards. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Target creature can't be blocked this turn.
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

Look at the top two cards of your library. Put one of them into your hand, then you may have any number of players each mill three cards.

If you've scried this turn, this spell costs {2} less to cast and can't be countered.
Draw two cards.

Undercroft Portal enters with four barrier counters on it.
Invocation — Whenever you spend four or more mana to cast a spell or activate an ability during your turn, draw a card and remove a barrier counter from Undercroft Portal. Then if it has no barrier counters
on it, transform it.

Whenever a creature you control dies, you may return all cards that were inscribed onto that creature and all Auras that were attached to that creature to their owners' hands.

Surveil 1, then draw a card.
Flashback—{2}{B}, Pay 1 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

If you would draw a card, you may return an instant or sorcery card from your graveyard to your hand instead.
{U}: Draw three cards.

Each artifact you control has all the activated abilities of other artifacts you control.

Conjure six duplicates of target instant or sorcery card in a graveyard into your main library. Then shuffle.
Draw a card.

Gain control of target creature with power less than or equal to the number of different creature types among creatures you control.

Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)
Tap up to three target creatures. If this spell was kicked, those creatures don't untap during their controller's next untap step.

Counter target spell if four or more mana was spent to cast it.