Alabaster Mage

{1}{W}: Target creature you control gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.)

Jodah, the Unifier

Legendary creatures you control get +X/+X, where X is the number of legendary creatures you control.
Whenever you cast a legendary spell from your hand, exile cards from the top of your library until you exile a legendary nonland card with lesser mana value. You may cast that card without paying its mana cost. Put the rest on the bottom of your library in a random order.

Esper Sentinel

Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is this creature's power.

Aggressive Instinct

Target creature you control deals damage equal to its power to target creature you don't control.

Apprentice Wizard

All Will Be One

Whenever you put one or more counters on a permanent or player, this enchantment deals that much damage to target opponent, creature an opponent controls, or planeswalker an opponent controls.

Aftershock

Destroy target artifact, creature, or land. Aftershock deals 3 damage to you.

Arcane Savant

Before you shuffle your deck to start the game, you may reveal this card from your deck and exile an instant or sorcery card you drafted that isn't in your deck.
When this creature enters, copy a card you exiled with cards named Arcane Savant. You may cast the copy without paying its mana cost.

Rhystic Study

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Always Watching

Nontoken creatures you control get +1/+1 and have vigilance.

Plains

Aegis of the Gods

You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Island

Mountain

Act of Treason

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

Abzan Ascendancy

When this enchantment enters, put a +1/+1 counter on each creature you control.
Whenever a nontoken creature you control dies, create a 1/1 white Spirit creature token with flying.

Explosive Crystal

Explosive Crystal deals 4 damage divided as you choose among any number of targets. (Then exile this card. You may cast the creature later from exile.)

Amethyst Dragon

Amethyst Dragon // Explosive Crystal

Forest

Abuelo's Awakening

Return target artifact or non-Aura enchantment card from your graveyard to the battlefield with X additional +1/+1 counters on it. It's a 1/1 Spirit creature with flying in addition to its other types.

Aminatou's Augury

Exile the top eight cards of your library. You may put a land card from among them onto the battlefield. Until end of turn, for each nonland card type, you may cast a spell of that type from among the exiled cards without paying its mana cost.

Amphin Pathmage

{2}{U}: Target creature can't be blocked this turn.

Ana Disciple

{U}, {T}: Target creature gains flying until end of turn.
{B}, {T}: Target creature gets -2/-0 until end of turn.

Memnarch

{1}{U}{U}: Target permanent becomes an artifact in addition to its other types. (This effect lasts indefinitely.)
{3}{U}: Gain control of target artifact. (This effect lasts indefinitely.)

Adeliz, the Cinder Wind

Flying, haste
Whenever you cast an instant or sorcery spell, Wizards you control get +1/+1 until end of turn.

Amok

{1}, Discard a card at random: Put a +1/+1 counter on target creature.

Aether Adept

When this creature enters, return target creature to its owner's hand.

Aerie Mystics

Flying
{1}{G}{U}: Creatures you control gain shroud until end of turn. (They can't be the targets of spells or abilities.)

Afiya Grove

This enchantment enters with three +1/+1 counters on it.
At the beginning of your upkeep, move a +1/+1 counter from this enchantment onto target creature.
When this enchantment has no +1/+1 counters on it, sacrifice it.

Swamp

Basalt Ravager

When this creature enters, it deals X damage to any target, where X is the greatest number of creatures you control that have a creature type in common.

Alchemist's Apprentice

Aether Snap

Remove all counters from all permanents and exile all tokens.

Arbiter of Knollridge

Vigilance
When this creature enters, each player's life total becomes the highest life total among all players.