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.

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

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

Flying
: Tap target creature with flying.

[+1]: You gain 2 life.
[−1]: Put a +1/+1 counter on each creature you control. Those creatures gain vigilance until end of turn.
[−6]: Create a white Avatar creature token. It has "This creature's power and toughness are each equal to your life total."

At the beginning of your upkeep, you may gain 1 life.

Whenever you gain life, put a +1/+1 counter on Ajani's Pridemate.

: Target creature an opponent controls attacks you this turn if able.

Flying
: Ancient Hellkite deals 1 damage to target creature defending player controls. Activate this ability only if Ancient Hellkite is attacking.

Whenever a player casts a white spell, you may gain 1 life.

Flying
Each opponent who cast a spell this turn can't attack with creatures.
Each opponent who attacked with a creature this turn can't cast spells.

Haste (This creature can attack and as soon as it comes under your control.)
At the beginning of the end step, sacrifice Arc Runner.

Enchant creature
Enchanted creature gets +1/+1 for each Plains you control and has flying.

Destroy target tapped creature.

Flying

Flying
When Augury Owl enters the battlefield, scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Spells you control can't be countered by blue or black spells this turn, and creatures you control can't be the targets of blue or black spells this turn.

When Awakener Druid enters the battlefield, target Forest becomes a 4/5 green Treefolk creature for as long as Awakener Druid remains on the battlefield. It's still a land.

Flying