msem-instigator

({T}: Add {R} or {W}.)
Rugged Fields enters tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)

Vanguard — Whenever a creature you control attacks alone, Shocking Ewe deals 2 damage to defending player.

Target creature you control gets +4/+4 until end of 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.”)

Spells you cast have trial 2. (As you cast them, an opponent of your choice may pay 2 life. If they don't, they fail the trial.)
Whenever an opponent fails a trial of a creature spell, that creature enters with an additional +1/+1 counter on it.
Whenever an opponent fails a trial of a noncreature spell, create a tapped Treasure token.

Return target creature card with mana value 3 or less from your graveyard to the battlefield.

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.
Menagerie — If there are five or more creature types among creatures you control, scry 3.

Sacrifice a creature: Exile the top card of your library. Until end of turn, you may play that card.

Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

{T}: Add {C}.
{1}, {T}: Add one mana of any color.
{2}, {T}, Sacrifice Great Beyond: Draw a card.

Choose target creature. Scry 3, then reveal the top card of your library. You gain X life and put X +1/+1 counters on that creature, where X is the revealed card's mana value.

Rapport — Whenever Crinster Stitcher and at least one other creature you control become tapped, tap target creature.

Blossoming Sands enters tapped.
When Blossoming Sands enters, you gain 1 life.
{T}: Add {G} or {W}.

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)
Creature tokens you control have lifelink.

Archive 3 (As this enters, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever you draw a card from the archived library, you exile up to one target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.

{T}, Tap two other untapped creatures you control: Add two mana of any one color.

Put target creature into its owner's library third from the top.

Target opponent chooses a card type, then reveals their hand. You choose a card from it that's not of the chosen type. That player discards that card.

Target creature gains lifelink until end of turn. Untap that creature.
Inscribe {1}{W} ({1}{W}: Exile this card from your hand inscribed on a creature you control. Whenever that creature attacks, its controller may cast a copy of the inscribed card without paying its mana cost. Inscribe only as a sorcery.)

{T}: Target creature you control gets +1/+1 until end of turn. Activate only as a sorcery.
Scavenge {W} ({W}, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

When Resting Tombs enters, exile target creature an opponent controls until this enchantment leaves the battlefield.
If a creature would die, exile it instead.
{3}{B}{B}: Exile all creature cards from all graveyards. Transform Resting Tombs. Activate only as a sorcery.

When Bio-Sequencer enters, conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)
{1}, {T}, Sacrifice Bio-Sequencer: Add one mana of any color.

Flying
Synchronous Hellkite enters with a +1/+1 counter for each other artifact you control.
Sacrifice three artifacts: Return Synchronous Hellkite from your graveyard to the battlefield.

Antu, Sun Spirit can't attack or block unless you control ten or more permanents.
As long as it's your turn, other creatures you control get +X/+0 and have haste, where X is the amount of life you've gained this turn.
When Antu dies or is put into exile from the battlefield, you may put him into his owner's library third from the top.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Art of war — At the beginning of your end step, if Aokara Duelists dealt damage to an opponent this turn, put a +1/+1 counter on it.

If you would look at or reveal one or more cards of a library, you may first search that library for that many cards, shuffle that library, then put those cards on top of it in any order.