Majestic Myriarch's power and toughness are each equal to twice the number of creatures you control.
At the beginning of each combat, this creature gains flying until end of turn if you control a creature with flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

Hexproof
At the beginning of your upkeep, you may reveal your hand. If you do, you win the game if you own a card named Hedron Alignment in exile, in your hand, in your graveyard, and on the battlefield.
: Scry 1.

Create a 1/1 colorless Spirit creature token.
Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

As long as you control a Mountain, this creature has menace. (It can't be blocked except by two or more creatures.)

Choose one or both —
• Counter target creature spell.
• Return target creature card from your graveyard to your hand.

Enchant creature
Enchanted creature can't attack or block.
: Return this Aura to its owner's hand.

: Add .
, : Shivan Gorge deals 1 damage to each opponent.

Enchant creature
Domain — Enchanted creature gets -1/-1 for each basic land type among lands you control.

You have no maximum hand size.
At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game.
: Draw a card.

Tendrils of Corruption deals X damage to target creature and you gain X life, where X is the number of Swamps you control.

At the beginning of your upkeep, if you control four or more creatures, transform this creature.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Delirium — If there are four or more card types among cards in your graveyard, instead search your library for a creature or land card, reveal it, put it into your hand, then shuffle.

As an additional cost to cast this spell, discard X cards.
Nahiri's Wrath deals damage equal to the total mana value of the discarded cards to each of up to X target creatures and/or planeswalkers.

At the beginning of your upkeep, if you control a black or red permanent, you gain 2 life. If you control a black permanent and a red permanent, you gain 4 life instead.

If a nontoken creature an opponent controls would die, exile that card with an ice counter on it instead.
You may cast spells from among cards in exile your opponents own with ice counters on them, and you may spend mana from snow sources as though it were mana of any color to cast those spells.

Enchant creature
Enchanted creature gets +1/+1 for each land you control and has trample.

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)
: Add one mana of any color.
: Put a +1/+1 counter on this creature.

Kicker (You may pay an additional as you cast this spell.)
Vigilance
If this creature was kicked, it enters with a +1/+1 counter on it.

Flying, trample
At the beginning of your upkeep, sacrifice a creature other than this creature. If you can't, this creature deals 7 damage to you.

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)
: Add one mana of any color.
: Put a +1/+1 counter on this creature.