msem-instigator

{T}: Add {C}.
Tap an untapped creature you control: Dragonwall Gates becomes a 0/4 Wall artifact creature with defender until end of turn. It's still a land.

Each land is an Island in addition to its other land types.

Equipped creature gets +2/+2 and has protection from colorless and from multicolored. This effect doesn't remove Sword of Silver and Gold. (This permanent can't be targeted, dealt damage, enchanted, or equipped by anything colorless or multicolored.)
Whenever equipped creature deals combat damage to a player, you create a 2/2 colorless Spirit creature token and that player exiles the top three cards of their library.
Equip {2}

When Spellblade enters, you may exile an instant card with mana value 2 or less from your hand.
At the beginning of your end step, if equipped creature dealt damage to an opponent this turn, you may copy the exiled card. If you do, you may cast the copy without paying its mana cost.
Equip {2}

Activated abilities of cards in your hand cost up to {1} less to activate. This effect can't reduce the amount of mana an ability costs to activate to less than one mana.

As long as Sigiled Scrollcase is attached to a creature you control, you have no maximum hand size.
Whenever equipped creature dies, draw a card.
Equip {1}

Flying, lifelink
Whenever Shioki, Imperial Heir attacks, exile any number of other target nonland permanents you control, then return those cards to the battlefield under their owner's control.

Equipped creature gets +2/+2 and has flying and lifelink.
When equipped creature deals combat damage to a player, unattach Shionoshio, Ocean's Vow, then transform it.
Equip {W}{U}
Shionoshio can be your commander.

Your opponents play with their hands revealed.

Equipped creatures you control get +1/+1.
You may activate equip abilities any time you could cast an instant.
Equip {2}

Equipped creature gets +1/+0 for each colorless creature you control.
Equip {1}

Prevent all combat damage that would be dealt to attacking creatures you control.

You have hexproof.
Whenever a creature deals combat damage to you or a planeswalker you control, Mask of Shikai deals 1 damage to that creature.

When Kiri Yoroi enters, create a 2/2 colorless Spirit creature token and attach Kiri Yoroi to it.
Equipped creatures you control get +1/+1.
Equip {2}

Equipped creatures you control get +1/+1.
Equip {2}

Whenever you cast your first instant or sorcery spell each turn, untap equipped creature.
Equip {1}

Equipped creature gets +3/+2.
Equip {3}

When Eternal Inheritance enters or at the beginning of your upkeep, if you control no Samurai, create a 1/1 colorless Samurai creature token, then you may attach Eternal Inheritance to it.
Equipped creature gets +1/+1.
Equip {1}

{T}, Sacrifice a Snake: Choose a counter on target permanent or player. You may put an additional counter of that kind on that permanent or player.

Equipped creature gets +2/+0.
Equip {1}

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}

Equipped creature gets +2/+2 and has poisonous 2. (Whenever this creature deals combat damage to a player, that player gets two poison counters.)
Whenever equipped creature attacks, create a 1/1 green Snake creature token with poisonous 1 that's tapped and attacking. Exile that token at end of combat.
Equip {2}

Vigilance
Art of war — At the beginning of your end step, if Yuso, Light of Jidai dealt damage to an opponent this turn, you may search your library for a creature card with mana value 2 or less, reveal it, put it into your hand, then shuffle.

You may have Urushi, the Ripple in the Smoke enter as a copy of any creature on the battlefield, except it's an enchantment. (It's not a creature.)

Target player sacrifices a creature.
Inscribe {3}{B}{R} ({3}{B}{R}: 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.)