Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

When Adder-Staff Boggart enters the battlefield, clash with an opponent. If you win, put a +1/+1 counter on Adder-Staff Boggart. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher converted mana cost.)

Flying
Landfall — Whenever a land enters the battlefield under your control, you may exile target nonland permanent other than Admonition Angel.
When Admonition Angel leaves the battlefield, return all cards exiled with it to the battlefield under their owners' control.

When this creature enters the battlefield, roll a six-sided die. You gain life equal to the result.

Flying (This creature can't be blocked except by creatures with flying or reach.)
When Aegis Angel enters the battlefield, another target permanent gains indestructible for as long as you control Aegis Angel. (Effects that say "destroy" don't destroy it. A creature with indestructible can't be destroyed by damage.)

You may play an additional land on each of your turns.
Whenever a land enters the battlefield under your control, you may draw a card.

When Aether Adept enters the battlefield, return target creature to its owner's hand.

First strike
When Aether Chaser enters the battlefield, you get (two energy counters).
Whenever Aether Chaser attacks, you may pay . If you do, create a 1/1 colorless Servo artifact creature token.

Kicker (You may pay an additional as you cast this spell.)
Aether Figment can't be blocked.
If Aether Figment was kicked, it enters the battlefield with two +1/+1 counters on it.

When Aether Herder enters the battlefield, you get (two energy counters).
Whenever Aether Herder attacks, you may pay . If you do, create a 1/1 colorless Servo artifact creature token.

Vigilance
When Aether Inspector enters the battlefield, you get (two energy counters).
Whenever Aether Inspector attacks, you may pay . If you do, create a 1/1 colorless Servo artifact creature token.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When Aether Poisoner enters the battlefield, you get (two energy counters).
Whenever Aether Poisoner attacks, you may pay . If you do, create a 1/1 colorless Servo artifact creature token.

Reveal Aether Searcher as you draft it. Reveal the next card you draft and note its name.
When Aether Searcher enters the battlefield, you may search your hand and/or library for a card with a name noted as you drafted cards named Aether Searcher. You may cast it without paying its mana cost. If you searched your library this way, shuffle it.

Flying
When Aether Swooper enters the battlefield, you get (two energy counters).
Whenever Aether Swooper attacks, you may pay . If you do, create a 1/1 colorless Servo artifact creature token.

When Aether Theorist enters the battlefield, you get (three energy counters).
, Pay : Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Flying, lifelink
When Aetherborn Marauder enters the battlefield, move any number of +1/+1 counters from other permanents you control onto Aetherborn Marauder.

When Aethersnipe enters the battlefield, return target nonland permanent to its owner's hand.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Flying
Whenever Aetherstorm Roc or another creature enters the battlefield under your control, you get (an energy counter).
Whenever Aetherstorm Roc attacks, you may pay . If you do, put a +1/+1 counter on it and tap up to one target creature defending player controls.

Trample
When Aetherstream Leopard enters the battlefield, you get (an energy counter).
Whenever Aetherstream Leopard attacks, you may pay . If you do, it gets +2/+0 until end of turn.

Flying
When Aethertide Whale enters the battlefield, you get (six energy counters).
Pay : Return Aethertide Whale to its owner's hand.