When you encounter Morphic Tide, each player shuffles all permanents they own into their library, then reveals that many cards from the top of their library. Each player puts all artifact, creature, land, and planeswalker cards revealed this way onto the battlefield, then does the same for enchantments cards, then puts all cards revealed this way that weren't put onto the battlefield on the bottom of their library in any order. (Then planeswalk away from this phenomenon.)

When you set this scheme in motion, each opponent's life total becomes the lowest life total among your opponents.

Living weapon
Equipped creature gets +0/+1 and has "Sacrifice this creature: This creature deals 1 damage to any target."
Equip

This land enters tapped.
When this land enters, you may put target creature card from your graveyard on top of your library.
: Add .

This artifact enters tapped.
: Add .

, , Sacrifice this artifact: Add . Draw a card.

, : Add .

Hideaway 4
This land enters tapped.
: Add .
, : You may play the exiled card without paying its mana cost if creatures you control have total power 10 or greater.

, Pay 1 life: Add or .
, : Mount Doom deals 1 damage to each opponent.
, , Sacrifice Mount Doom and a legendary artifact: Choose up to two creatures, then destroy the rest. Activate only as a sorcery.

At the beginning of your end step, put a pressure counter on Mount Keralia.
When you planeswalk away from Mount Keralia, it deals damage equal to the number of pressure counters on it to each creature and each planeswalker.

Whenever chaos ensues, prevent all damage that planes named Mount Keralia would deal this game to permanents you control.

Red legendary creatures you control have "bands with other legendary creatures."

This land enters tapped.
, Sacrifice this land: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.

Imprint — When this artifact enters, you may exile target card from a graveyard.
, : Prevent all damage that would be dealt this turn by a source of your choice that shares a color with the exiled card.

: Add .
, , Sacrifice this land: It deals 4 damage to target creature. ( can be paid with one mana from a snow permanent.)

: Add one mana of any color among legendary creatures and planeswalkers you control.

: Add .

If this artifact would enter, you may discard a land card instead. If you do, put this artifact onto the battlefield. If you don't, put it into its owner's graveyard.
: Add one mana of any color.

: Add .

: Add one mana of any color. Activate only if you control a Dragon.

: Add .