Isao, Enlightened Bushi

Loam Dweller

Creature — Spirit (2/2)

Whenever you cast a Spirit or Arcane spell, you may put a land card from your hand onto the battlefield tapped.

Matsu-Tribe Sniper

Creature — Snake Warrior Archer (1/1)

: Matsu-Tribe Sniper deals 1 damage to target creature with flying.
Whenever Matsu-Tribe Sniper deals damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

Petalmane Baku

Creature — Spirit (1/2)

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Petalmane Baku.
, Remove X ki counters from Petalmane Baku: Add X mana of any one color.

Gnarled Mass

Creature — Spirit (3/3)

Iwamori of the Open Fist

Legendary Creature — Human Monk (5/5)

Trample
When Iwamori of the Open Fist enters the battlefield, each opponent may put a legendary creature card from their hand onto the battlefield.

Lifespinner

Creature — Spirit (3/3)

, Sacrifice three Spirits: Search your library for a legendary Spirit permanent card, put it onto the battlefield, then shuffle.

Sakura-Tribe Springcaller

Creature — Snake Shaman (2/4)

At the beginning of your upkeep, add . Until end of turn, you don't lose this mana as steps and phases end.

Shizuko, Caller of Autumn

Legendary Creature — Snake Shaman (2/3)

At the beginning of each player's upkeep, that player adds . Until end of turn, they don't lose this mana as steps and phases end.

Kentaro, the Smiling Cat

Legendary Creature — Human Samurai (2/1)

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)
You may pay rather than pay the mana cost for Samurai spells you cast, where X is that spell's mana value.

Toshiro Umezawa

Legendary Creature — Human Samurai (2/2)

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)
Whenever a creature an opponent controls dies, you may cast target instant card from your graveyard. If that spell would be put into a graveyard, exile it instead.

Hired Muscle // Scarmaker

Creature — Human Warrior // Legendary Creature — Spirit (2/2)

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Hired Muscle.
At the beginning of the end step, if there are two or more ki counters on Hired Muscle, you may flip it.

Scarmaker

Remove a ki counter from Scarmaker: Target creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Indebted Samurai

Creature — Human Samurai (2/3)

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)
Whenever a Samurai you control dies, you may put a +1/+1 counter on Indebted Samurai.

Opal-Eye, Konda's Yojimbo

Legendary Creature — Fox Samurai (1/4)

Defender (This creature can't attack.)
Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)
: The next time a source of your choice would deal damage this turn, that damage is dealt to Opal-Eye, Konda's Yojimbo instead.
: Prevent the next 1 damage that would be dealt to Opal-Eye this turn.

Takeno's Cavalry

Creature — Human Samurai Archer (1/1)

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)
: Takeno's Cavalry deals 1 damage to target attacking or blocking Spirit.

Budoka Pupil // Ichiga, Who Topples Oaks

Creature — Human Monk // Legendary Creature — Spirit (2/2)

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Budoka Pupil.
At the beginning of the end step, if there are two or more ki counters on Budoka Pupil, you may flip it.

Ichiga, Who Topples Oaks

Trample
Remove a ki counter from Ichiga, Who Topples Oaks: Target creature gets +2/+2 until end of turn.

Callow Jushi // Jaraku the Interloper

Creature — Human Wizard // Legendary Creature — Spirit (2/2)

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Callow Jushi.
At the beginning of the end step, if there are two or more ki counters on Callow Jushi, you may flip it.

Jaraku the Interloper

Remove a ki counter from Jaraku the Interloper: Counter target spell unless its controller pays .

Cunning Bandit // Azamuki, Treachery Incarnate

Creature — Human Warrior // Legendary Creature — Spirit (2/2)

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Cunning Bandit.
At the beginning of the end step, if there are two or more ki counters on Cunning Bandit, you may flip it.

Azamuki, Treachery Incarnate

Remove a ki counter from Azamuki, Treachery Incarnate: Gain control of target creature until end of turn.

Faithful Squire // Kaiso, Memory of Loyalty

Creature — Human Soldier // Legendary Creature — Spirit (2/2)

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Faithful Squire.
At the beginning of the end step, if there are two or more ki counters on Faithful Squire, you may flip it.

Kaiso, Memory of Loyalty

Flying
Remove a ki counter from Kaiso, Memory of Loyalty: Prevent all damage that would be dealt to target creature this turn.

Fumiko the Lowblood

Legendary Creature — Human Samurai (3/2)

Fumiko the Lowblood has bushido X, where X is the number of attacking creatures. (Whenever this creature blocks or becomes blocked, it gets +X/+X until end of turn.)
Creatures your opponents control attack each combat if able.

Kira, Great Glass-Spinner

Legendary Creature — Spirit (2/2)

Flying
Creatures you control have "Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."