This spell can’t be countered.

Destroy target nonland permanent with mana value 3 or less.

Flying

When Abyssal Horror enters the battlefield, target player discards two cards.

Flying

Whenever Abyssal Specter deals damage to a player, that player discards a card.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

When Acidic Slime enters the battlefield, destroy target artifact, enchantment, or land.

As Adaptive Automaton enters the battlefield, choose a creature type.

Adaptive Automaton is the chosen type in addition to its other types.

Other creatures you control of the chosen type get +1/+1.

{T}: Add {C}.

{T}: Add {W} or {U}. Adarkar Wastes deals 1 damage to you.

Whenever a creature enters the battlefield, Aether Flash deals 2 damage to it.

Whenever you cast a spell, you gain 1 life for each spell you’ve cast this turn.

Pay 50 life: Aetherflux Reservoir deals 50 damage to any target.

When Aether Hub enters the battlefield, you get {E} (an energy counter).

{T}: Add {C}.

{T}, Pay {E}: Add one mana of any color.

At the beginning of your upkeep, you may put a charge counter on Aether Vial.

{T}: You may put a creature card with mana value equal to the number of charge counters on Aether Vial from your hand onto the battlefield.

Look at target player’s hand and choose two cards from it. Put them on top of that player’s library in any order.

Flying

{8}, {T}: Aladdin’s Ring deals 4 damage to any target.

Echo {1}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

{1}{G}: Regenerate Albino Troll.

Sacrifice a creature: Target player mills cards equal to the sacrificed creature’s power.

Swampwalk (This creature can’t be blocked as long as defending player controls a Swamp.)

Look at the top seven cards of your library. Put two of them into your hand and the rest into your graveyard.

Destroy target artifact.

Flashback {G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{G}: Regenerate Ancient Silverback. (The next time this creature would be destroyed this turn, it isn’t. Instead tap it, remove all damage from it, and remove it from combat.)

Flying

{T}: Target attacking or blocking creature gets +1/+1 until end of turn.