msem-instigator

This spell costs {1} less to cast for each differently named land you control.
Reach, trample

As long as Arboreal Runes is on the battlefield or in your graveyard, it's a Forest land in addition to its other types.
{T}: Add one mana of any color.

Search your library for an instant or sorcery card, reveal it, put it into your hand, then shuffle.

Whenever you cast a spell, draw a card if that spell has the same name as a card in your graveyard.

Wanderlust — When you cast this spell, you may copy it if you control four or more differently named lands.
Exile the top two cards of your library. Until the end of your next turn, you may play those cards. Create a colorless land token named Fading Rift with “{T}, Sacrifice this land: Add one mana of any color.”

You have no maximum hand size.
{T}: Add {C}.
{1}, {T}: Add one mana of any color.

Wanderlust — When Ardent Explorers enters the battlefield, if you control four or more differently named lands, create a 1/1 Scout creature token that's all colors. That token gains haste until end of turn.

Menace, haste
As long as Arleigh, Spellblade Prodigy is tapped, the first spell you cast during each other player's turn costs {U/R} less to cast. This effect reduces only the amount of colored mana you pay.

Flying
Improve {1}{U}

Equipped creature gets +2/+2.
Art of war — At the beginning of your end step, if equipped creature dealt damage to an opponent this turn, untap each equipped creature you control.
Equip {2}

Whenever you cast an Inscription spell, you may choose target creature you control. If you do, as that Inscription resolves, exile it inscribed onto that creature instead of putting it anywhere else.

Equipped creature gets +2/+2.
Art of war — At the beginning of your end step, if equipped creature dealt damage to an opponent this turn, target nonbasic land an opponent controls doesn't untap during its controller's next untap step.
Equip {2}

Put any number of target creature cards from your graveyard on top of your library. You draw two cards and you lose 2 life.

Haste
{T}, Sacrifice a creature: Ashspeaker deals 1 damage to any target.

When you cast Aspect of Shifting Storms, create a token that's a copy of it.
You may have Aspect of Shifting Storms enter the battlefield as a copy of any creature on the battlefield, except if it's a token it has no mana cost.

Destroy target creature. Create a tapped Treasure token.

When Aureate Golem enters the battlefield, create a Treasure token. Each other player creates a tapped Treasure token.

Autumn Canopy enters the battlefield tapped.
{1}, {T}: Add {R}{R} or {G}{G}.

You may put a permanent card with mana value 3 or less from your hand onto the battlefield.
Inscribe {3}{G}

When Awoken Animus enters the battlefield, create two 1/1 colorless Shapeshifter creature tokens with changeling.
{2}, Discard Awoken Animus: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Target opponent shuffles a card from their hand into their library.

At the beginning of your upkeep, put a loyalty counter on each planeswalker you control.
[0]: Tap target creature.
[–1]: Untap target basic land.
[–7]: Draw up to six cards.

The first instant or sorcery spell you cast each turn has convoke.

Menace
When Azuma Hashiro, the Thronebreaker enters the battlefield, you may cast up to two cards from your opponents' graveyards without paying their mana costs. If those spells would be put into a graveyard, exile that card instead.

You may cast target instant card from your graveyard this turn. If a card cast this way would be put into your graveyard, exile it instead.