Mirror Box

The "legend rule" doesn't apply to permanents you control.
Each legendary creature you control gets +1/+1.
Each nontoken creature you control gets +1/+1 for each other creature you control with the same name as that creature.

Plains

Go-Shintai of Boundless Vigor

Trample
At the beginning of your end step, you may pay {1}. When you do, put a +1/+1 counter on target Shrine for each Shrine you control.

Vivid Meadow

Vivid Meadow enters tapped with two charge counters on it.
{T}: Add {W}.
{T}, Remove a charge counter from Vivid Meadow: Add one mana of any color.

Forest

Vivid Creek

Vivid Creek enters tapped with two charge counters on it.
{T}: Add {U}.
{T}, Remove a charge counter from Vivid Creek: Add one mana of any color.

Vivid Crag

Vivid Crag enters tapped with two charge counters on it.
{T}: Add {R}.
{T}, Remove a charge counter from Vivid Crag: Add one mana of any color.

Go-Shintai of Shared Purpose

Vigilance
At the beginning of your end step, you may pay {1}. If you do, create a 1/1 colorless Spirit creature token for each Shrine you control.

Mountain

Sanctum of All

At the beginning of your upkeep, you may search your library and/or graveyard for a Shrine card and put it onto the battlefield. If you search your library this way, shuffle.
If an ability of another Shrine you control triggers while you control six or more Shrines, that ability triggers an additional time.

Sanctum of Fruitful Harvest

At the beginning of your first main phase, add X mana of any one color, where X is the number of Shrines you control.

Sanctum of Shattered Heights

{1}, Discard a land card or Shrine card: Sanctum of Shattered Heights deals X damage to target creature or planeswalker, where X is the number of Shrines you control.

Go-Shintai of Lost Wisdom

Flying
At the beginning of your end step, you may pay {1}. When you do, target player mills X cards, where X is the number of Shrines you control. (To mill a card, a player puts the top card of their library into their graveyard.)

Honden of Infinite Rage

At the beginning of your upkeep, Honden of Infinite Rage deals damage to any target equal to the number of Shrines you control.

Reliquary Tower

You have no maximum hand size.
{T}: Add {C}.

Go-Shintai of Hidden Cruelty

Deathtouch
At the beginning of your end step, you may pay {1}. When you do, destroy target creature with toughness X or less, where X is the number of Shrines you control.

Swamp

Vivid Grove

Vivid Grove enters tapped with two charge counters on it.
{T}: Add {G}.
{T}, Remove a charge counter from Vivid Grove: Add one mana of any color.

Chromatic Lantern

Lands you control have "{T}: Add one mana of any color."
{T}: Add one mana of any color.

Honden of Cleansing Fire

At the beginning of your upkeep, you gain 2 life for each Shrine you control.

Honden of Life's Web

At the beginning of your upkeep, create a 1/1 colorless Spirit creature token for each Shrine you control.

Sanctum of Calm Waters

At the beginning of your first main phase, you may draw X cards, where X is the number of Shrines you control. If you do, discard a card.

Go-Shintai of Ancient Wars

First strike
At the beginning of your end step, you may pay {1}. When you do, Go-Shintai of Ancient Wars deals X damage to target player or planeswalker, where X is the number of Shrines you control.

Honden of Night's Reach

At the beginning of your upkeep, target opponent discards a card for each Shrine you control.

Sanctum of Stone Fangs

At the beginning of your first main phase, each opponent loses X life and you gain X life, where X is the number of Shrines you control.

Vivid Marsh

Vivid Marsh enters tapped with two charge counters on it.
{T}: Add {B}.
{T}, Remove a charge counter from Vivid Marsh: Add one mana of any color.

Go-Shintai of Life's Origin

{W}{U}{B}{R}{G}, {T}: Return target enchantment card from your graveyard to the battlefield.
Whenever Go-Shintai of Life's Origin or another nontoken Shrine you control enters, create a 1/1 colorless Shrine enchantment creature token.

Island

Honden of Seeing Winds

At the beginning of your upkeep, draw a card for each Shrine you control.

Sanctum of Tranquil Light

{5}{W}: Tap target creature. This ability costs {1} less to activate for each Shrine you control.