At the beginning of your end step, create a 1/1 blue Ninja creature token with “This creature can't be blocked by creatures with greater power.”
Whenever you activate a ninjutsu ability for the first time each turn, untap up to two target lands you control.

Ninjutsu {4}{G}

Ninjutsu {6}{G}. This ability costs {1} less to activate for each attacking creature you control.
Trample

Time loop
I — Create a tapped Treasure token.
II — You may discard a card. If you do, exile the top two cards of your library. You may play one of those cards this turn.
III — This Saga deals 2 damage to each opponent.

Whenever a creature you control leaves the battlefield without dying, you may put a permanent card with lesser mana value from your hand onto the battlefield.

Flash
Whenever one or more counters are put on another creature you control, you may put a +1/+1 counter on Shiori.
{2}: Change a target of target spell to a creature or enchantment you control with one or more counters on it.

Equipped creature can't be blocked by creatures with power 2 or less.
Whenever equipped creature attacks, it gets +X/+X until end of turn, where X is its power.
Equip {3}

Creatures your opponents control get -1/-0.
Whenever this creature attacks, defending player mills a number of cards equal to 0 minus its power.
At the beginning of your end step, gain control of target creature with power 0 or less.

When this land enters, sacrifice it. If you do, search your library for a basic Plains or Island card, put it onto the battlefield tapped, then shuffle.
{1}{W}{W}{U}{U}, Discard this card: Counter target spell. You gain 3 life.

Vigilance
Whenever a creature token you control deals combat damage to a player, draw a card.

When you cast this spell, copy it if you control a creature with flying. You may choose new targets for the copy.
Tap up to one target artifact or creature. Create a 1/1 blue Bird creature token with flying.

Reach
When this creature enters, create a green Subroutine enchantment token named MOUNT with “Whenever this Subroutine runs, target creature you control gets +2/+2 until end of turn.”

When this creature dies, it deals 3 damage to any target.
Cycling {B/R}

Lifelink
Whenever this creature or another creature you control enters, if it entered from a graveyard or was cast from a graveyard, put two exalted counters on it.

Level up {2}{B}
[level 1-2] Deathtouch
[level 3+] Deathtouch

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

This land enters tapped.
{2}{W}{U}, {T}: Surveil 1.

This land enters tapped unless you control one or fewer other lands.
{T}: Add {G} or {U}.
Cycling {2}

Enchant creature with power 2 or less
You control enchanted creature.

Exile target creature or Subroutine, then return that card to the battlefield under its owner's control.
Cache the top card of your library face down.

Vigilance, ward {2}
Memories you control are 4/4 creatures with vigilance and ward {2} in addition to their other types.

Whenever this creature deals combat damage to a player or planeswalker, put a +1/+1 counter on it.

As this artifact enters, choose two different colors.
Each spell you cast that's one or more of the chosen colors costs {1} less to cast.

Flying, haste
Whenever one or more +1/+1 counters are put on this creature, it deals that much damage to each opponent.
At the beginning of your end step, return this card from your graveyard to your hand if one or more +1/+1 counters were put on a creature you control this turn.

When this enchantment enters, it deals X damage to each creature.
Whenever one or more creatures your opponents control die, you create a Treasure token. This ability triggers only once each turn.