msem-instigator

Equipped creature gets +1/+0 and has first strike.
{1}{R}: Equipped creature gets +1/+0 until end of turn.
Equip {2}

Equipped creature gets +2/+1.
Equip multicolored creature {1}
Equip {2}

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Scry 2.
II — Draw two cards.
III — Spells you cast this turn cost {2} less to cast.

Flying
When Ageless Lorekeeper enters the battlefield, you may discard your hand. When you do, draw three cards.

Whenever a land enters the battlefield under your control, untap Ageless Wanderer.
{1}, {T}: Add one mana of any color.

Menace, trample, indestructible
Whenever Aghavaan Unleashed deals combat damage to a player, that player gets that many poison counters.
At the beginning of your end step, sacrifice another creature or transform Aghavaan Unleashed.

{T}: Add {C}.
At the beginning of each end step, if you control five or more Snake creatures, transform Aghavaan's Wound.

Deception {1}{B} ({1}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
When Aguri, Shadow of Doubt enters the battlefield, target player reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

[+2]: Create a 1/1 blue Bird creature token with flying.
[–2]: Reveal the top card of your library. If it's an enchantment or land card, put it onto the battlefield. Otherwise, put it in your hand.
[–7]: Draw seven cards.

{T}, Discard a card: Add {C}.
Whenever you discard one or more cards, you may pay {2}. If you do, draw a card.

[+1]: Aiel Tazan deals 2 damage to any target. Then she deals 2 damage to herself unless you have her deal 2 damage to you.
[–3]: Creatures you control get +2/+0 and gain haste until end of turn.
[–X]: Create an X/1 red Elemental creature token with haste and trample. Exile that token at the beginning of the next end step. If X is 6 or more, it gains double strike.

[+1]: Exile up to one other target nonland permanent. As long as it remains exiled, its owner may pay {1} as a sorcery to put it onto the battlefield.
[–3]: Choose 0, 1, or 2. Each player sacrifices that many creatures.
[–4]: You get an emblem with “If a nonland, nontoken permanent would enter the battlefield and it wasn't cast, you may exile it instead.”

Whenever one or more counters are put on a permanent you control for the first time each turn, create that many 1/1 green Squirrel creature tokens.
{1}{G}{W}, {T}: Proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

Frenzy 2 (Whenever this creature attacks and isn't blocked, it gets +2/+0 until end of turn.)
Whenever Airam, Packleader becomes blocked, other creatures you control get +1/+1 until end of turn.

As long as Ajani Enlightened has an odd or even number of loyalty counters on him, he has protection from mana values of that quality.
[+1]: You gain 2 life. Untap up to two target lands.
[0]: Each player may draw a card. For each opponent that does, you draw a card.
[–3]: Create a 4/4 white Avatar creature token with “This creature can't attack if you control an Ajani planeswalker.”

[+1]: Distribute two +1/+1 counters among up to two target creatures. You gain 2 life.
[–1]: Create a 2/2 green Cat Warrior creature token.
[–3]: Exile target creature. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.
[–7]: You get an emblem with “Creatures you control get +X/+X, where X is your life total.”

This spell can't be countered.
Flying
Whenever Ajax, Tyrant of the Empire enters the battlefield or deals combat damage to a player, draw a card.
Whenever Ajax or another Dragon you control attacks, that Dragon deals 2 damage to any target.

You may spend mana as though it were mana of any color to cast planeswalker spells.
[–1]: Put a -1/-1 counter on target tapped creature.
[–2]: You gain 2 life for each tapped creature your opponents control.
[–3]: Destroy all creatures that attacked a planeswalker you controlled since your last turn.

Skip your draw step.
If a card would be put into your graveyard, exile it instead.
At the beginning of your upkeep, return a card from your graveyard to your hand. If you can't, you draw a card and you lose 1 life.

[+1]: Create a 1/1 white Soldier creature token.
[–2]: Until end of turn, target creature you control gets +3/+3 and other creatures you control get +1/+1.
[–8]: You get an emblem with “Each creature you control gets +1/+1 for each other creature you control.”

When Alaina enters the battlefield, each opponent loses X life and you gain X life, where X is the number of Clerics you control.
{W}{B}, Pay 2 life: Return Alaina from your graveyard to your hand. Activate only if you have more life than your starting life total.

At the beginning of each upkeep, if no spells were cast last turn, create a 2/2 green Wolf creature token.
{3}{R/G}{R/G}: Albin, the Huntmaster and creature tokens you control get +2/+2 and gain trample until end of turn.

You have no maximum hand size.
{T}: Add {C}.
{3}, {T}: Create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)

Equipped creature and creatures you control that share a name with it get +1/+0.
Whenever equipped creature attacks, create a tapped and attacking token that's a copy of that creature, except it's not legendary. Exile that token at the beginning of the next end step.
Equip {2}

When Alchemist's Kit enters the battlefield, you may return target creature to its owner's hand.
2U, Sacrifice Alchemist's Kit: Draw a card.