Whenever a creature is dealt damage, this enchantment deals that much damage to that creature's controller.

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Devoid (This card has no color.)
Target creature can't be blocked this turn.
Draw a card.

Permanents you control gain hexproof and indestructible until end of turn.

Each player shuffles their hand and graveyard into their library, then draws seven cards. Exile Time Reversal.

Flying, first strike, vigilance, trample
At the beginning of each combat, until end of turn, each other creature you control gets +1/+1 if it has flying, +1/+1 if it has first strike, and so on for double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, vigilance, and partner.
Partner

Vivid — : For each color among permanents you control, add one mana of that color.

Each player may search their library for up to X creature cards, reveal those cards, put them into their hand, then shuffle.

Until end of turn, creatures you control get +1/+1 and gain trample and infect. (Creatures with infect deal damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Whenever a permanent an opponent controls is put into a graveyard, put that card onto the battlefield under your control unless that opponent pays 3 life.

Changeling (This card is every creature type.)
As Morophon enters, choose a creature type.
Spells of the chosen type you cast cost less to cast. This effect reduces only the amount of colored mana you pay.
Other creatures you control of the chosen type get +1/+1.

Players can't untap more than one creature during their untap steps.

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
: Add .

: This creature gains flying until end of turn.

Flying, lifelink
Creature spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting a creature spell pays for or one mana of that creature's color.)
At the beginning of your first main phase, you may pay . If you do, transform Eirdu.

Whenever a creature dies, you may pay . If you do, you gain 1 life.

, : Search your library for a permanent card, put it onto the battlefield, then shuffle.

Protection from blue, from black, and from red

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

At the beginning of your upkeep, choose target opponent. Until end of turn, that player can't cast spells, you may look at the top card of their library any time, you may play the top card of their library, and you may spend mana as though it were mana of any color to cast spells this way.