msem-instigator

At the beginning of your upkeep, each opponent mills cards equal to the number of card types among permanents you control.

Flying
Whenever Hoff's Scout deals combat damage to a player, you may scry 1.

Create X 1/1 blue Boar Dragon creature tokens with flying. (Then exile this card. You may cast the creature later from exile.)

Flying
When Hollow Wanderer becomes the target of an ability or spell, sacrifice Hollow Wanderer.

Until your next turn, X target creatures you control gain “Whenever this creature deals combat damage to a player, draw a card” and “{1}: Return this creature to its owner's hand.”

Cadence (Whenever you cast a spell, if its mana value is greater than this creature's power, put a +1/+1 counter on this creature.)
Hopeless Wanderer can't be blocked.

Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
Pressure {U} (You may cast this spell for its pressure cost if there are seven or more cards in your graveyard.)

Chosen one ({W}{U}{B}{R}{G}: Transform this permanent.)
Whenever you cast an instant or sorcery spell, scry 1, then Horizon Augur gets +1/+1 until end of turn.

Flying
Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
At the beginning of combat on your turn, if you're in a renaissance, target creature gains flying until end of turn.

Flying
When Horned Spy enters, look at target player's hand.

Flash
When Hostile Takeover enters, you may counter target noncreature spell.
At the beginning of your upkeep, you may put a progress counter on a Project you control.

Flying
When Hoverbike Courier enters, you may reappropriate. If you do, draw a card. (To reappropriate, exile exactly two cards from your hand and/or graveyard.)

You have no maximum hand size.
Whenever a player casts a spell, put a +1/+1 counter on Humar.
At the beginning of your upkeep, target player draws cards equal to Humar's power.

When Humble Archivist enters, you may return target instant or sorcery card from your graveyard to your hand. If you do, conjure a card named Fatigue and put it on top of your library. (It's a colorless sorcery that costs {2} with “Draw a card.”)

Enchant opponent
Spells you cast that target enchanted player cost {2} less to cast.

Glitch {2} (Remove one [restriction] for each time you pay the glitch cost.)
Return target creature [you control] to its owner's hand.
Draw a card.

Counter target spell. If that spell is countered this way, its owner puts it on the top or bottom of their library instead of into their graveyard.
Each player draws a card.

Equipped creature gets +1/+1 for each permanent attached to it.
Permanents attached to equipped creature have ward {3}.
Equip {1}

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Enchant creature
Harness (You may tap a creature you control as you cast this spell. If you do, reduce this spell's mana cost by that creature's power.)
Enchanted creature doesn't untap during its controller's untap step.

Harness (You may tap a creature you control as you cast this spell. If you do, reduce this spell's mana cost by that creature's power.)
Search target opponent's library for a creature or planeswalker card and put it onto the battlefield under your control. That player shuffles.

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

Icecap Tortoise enters with three ice counters on it.
Icecap Tortoise has defender as long as it has an ice counter on it.
{1}{U}: Remove an ice counter from Icecap Tortoise.

Whenever Icepeak Phantasm becomes the target of a spell or ability, an opponent may pay {2}. If they do, sacrifice it.

Mill two cards, then you may return an instant or sorcery card from your graveyard to your hand.
Acquiesce (If you cast this spell from your hand, exile it as it resolves. When one or more creatures you control deal combat damage to an opponent, you may cast this card from exile without paying its mana cost.)