All Spirits have "When this permanent enters, you may have it deal 3 damage to target non-Spirit creature."
Non-Spirit creatures have "When this creature enters, you may have it deal 3 damage to target Spirit creature."

Enchant creature
Enchanted creature gets +1/+0 for each Mountain you control and has first strike.

Whenever a creature you control becomes blocked, this enchantment deals 1 damage to any target.

Domain — At the beginning of each player's upkeep, that player gains 1 life for each basic land type among lands they control. Then this enchantment deals 3 damage to that player.

Convoke
As this enchantment enters, choose a creature type.
Double all damage that sources you control of the chosen type would deal.

Whenever an artifact, creature, or enchantment enters, its controller chooses target permanent another player controls that shares a card type with it. Exchange control of those permanents.

Whenever a creature you control attacks, exile the top card of your library face down. (You can't look at it.)
, Discard your hand, Sacrifice this enchantment: Put all cards exiled with this enchantment into their owners' hands.

Enchant land
You control enchanted land.

Enchant non-Wall creature
Enchanted creature gets +1/+0.
At the beginning of your upkeep, put a +1/+0 counter on enchanted creature. If that creature has three or more +1/+0 counters on it, it deals damage equal to its power to its controller, then destroy that creature and it can't be regenerated.

Enchant creature
Enchanted creature gets +3/+3 and has "At the beginning of your upkeep, put a -1/-1 counter on this creature."

Enchant creature
When this Aura enters, suspect enchanted creature.
Enchanted creature gets +1/+1.
: Return this card from your graveyard to your hand.

(Gain the next level as a sorcery to add its ability.)
Whenever you attack, you may discard a card. If you do, draw a card.
: Level 2
Whenever you discard a card, this Class deals 2 damage to each opponent.
: Level 3
When this Class becomes level 3, search your library for a card, put it into your hand, shuffle, then discard a card at random.

At the beginning of your upkeep, exile the top card of your library. You may play that card this turn.

When this enchantment enters, you become the monarch.
At the beginning of your upkeep, create a 3/1 red Knight creature token. Then if you're the monarch, this enchantment deals X damage to each opponent, where X is the number of creatures you control.

When this enchantment enters, you become the monarch.
At the beginning of your upkeep, this enchantment deals 2 damage to any target. If you're the monarch, it deals 7 damage instead.

Enchant creature
Enchanted creature gets +1/+0.
Sacrifice this Aura: It deals 1 damage to target creature.

Enchant land you control
Enchanted land is a 3/3 red Spirit creature with haste. It's still a land.
If enchanted land would be destroyed, instead sacrifice this Aura and that land gains indestructible until end of turn.

Tap an untapped Gate you control: This enchantment deals 1 damage to each opponent.

Enchant creature you control
Enchanted creature gets +3/+2, has haste, and attacks each combat if able
: Return Craving of Yeenoghu from your graveyard to the battlefield attached to target creature you control. Craving of Yeenoghu perpetually gains "Enchanted creature gets -1/-1." Activate only as a sorcery.

When Crescent Island Temple enters, for each Shrine you control, create a 1/1 red Monk creature token with prowess.
Whenever another Shrine you control enters, create a 1/1 red Monk creature token with prowess.

Creatures with mountainwalk can be blocked as though they didn't have mountainwalk.

Enchant creature
: Enchanted creature gets +1/+0 until end of turn.
: Return this Aura to its owner's hand.

Enchant creature
Enchanted creature gets +1/+0 and has first strike.
Sacrifice this Aura: Enchanted creature and other creatures that share a creature type with it get +1/+0 and gain first strike until end of turn.

Dragon creatures you control get +3/+3.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)
When you unlock this door, this Room deals 2 damage to target creature.

Enchant land
Enchanted land is a 4/2 red Beast creature with trample. It's still a land.
When enchanted land dies, return that card to its owner's hand.

Enchant player
If a source would deal damage to enchanted player, it deals double that damage to that player instead.

Enchant player
Whenever a player attacks enchanted player with one or more creatures, that attacking player may discard a card. If the player does, they draw a card.

Enchant player
Creatures attacking enchanted player have trample.
Whenever a creature deals combat damage to enchanted player, that player exiles the top card of their library. Until end of turn, that creature's controller may play that card and they may spend mana as though it were mana of any color to cast that spell.

When this enchantment enters, tap all Islands.
Islands don't untap during their controllers' untap steps.