msem-instigator

Prowess
Whenever Hethwyr Warcaster or another Wizard you control enters, you may draw a card.

When Hideaway Agent enters, gain control of target nonland permanent with mana value 3 or less for as long as you control Hideaway Agent.

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

Flash
Whenever you cast another spell with flash or an instant, put a +1/+1 counter on High Street Shadow.

Whenever Highland Elk deals damage to a creature, return that creature to its owner's hand (if it's still on the battlefield.)

Flying
You may look at the top card of your library any time.

Flash
When Highpoint Guru enters, scry X, where X is the number of Monks you control.

Flying
When Highspire Informant enters, scry 1.

Equipped creature gets +2/+2.
Whenever equipped creature attacks, draw a card. Noncreature spells you cast this turn can be cast as though they had flash.
Equip {2}

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Hinasa Mystic enters, draw a card.

Whenever a player cycles a card, that player mills two cards.

When Hisana-no-Oni enters, gain control of target creature until Hisana-no-Oni leaves the battlefield.

Pressure {1}{U} (You may cast this spell for its pressure cost if seven or more cards are in your graveyard.)
Exile up to two target nonland permanents you control, then return them to the battlefield under their owner's control.

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.)