Neo Stehlia enters tapped unless you control a basic non-Plains land.
{T}: Add {W}.
{2}{W}, {T}: Choose a creature type. Creatures you control of the chosen type get +1/+0 until end of turn.

New Recruit has first strike as long as it is attacking.
When New Recruit dies, create a 2/2 black Zombie creature token.

Whenever another creature you control enters, you gain 2 life.

Enchant creature you control
All damage that would be dealt to you is dealt to enchanted creature instead.
If a source would deal damage to enchanted creature, if you control three or more enchantments, prevent 1 of that damage.

Flying, first strike
While you're looking at one or more cards on top of your library except while searching, you may reveal Niokana Headliner from among them and put it into your hand.

Whenever another creature you control enters, Nomad's Companion gets +1/+1 until end of turn.

If you would gain life, you gain that much life plus 1 instead.
If one or more tokens would be created under your control, those tokens plus a 0/1 white Goat creature token are created instead.

Flash
When Omen of Victory enters, create a 0/0 white Army creature token, then put two +1/+1 counters on it.
{2}{W}, Sacrifice Omen of Victory: Scry 2.

Whenever a nontoken creature you control enters, if it wasn't cast from your hand, put a +1/+1 counter on that creature.
Wander {2}{W}

Enchant creature
Whenever enchanted creature attacks, put a +1/+1 counter on it. Then if it has three or more +1/+1 counters on it, sacrifice Ordeal of Athreos.
When you sacrifice Ordeal of Athreos, return target creature card from your graveyard to the battlefield.

Outlands Prowler has first strike as long as it's your turn.
Landfall — Whenever a land you control enters, Outlands Prowler gets +2/+2 until end of turn.

When Overbearing Researcher enters, put a +1/+1 counter on target creature.
Each creature you control has ward {X}, where X is the number of counters on that creature.

Exile target creature. Tap up to two other target creatures if the exiled creature had power 3 or less.

Lifelink
Whenever you gain life, noncreature spells your opponents cast cost {1} more to cast until your next turn. This ability triggers only once each turn.

Defender
Whenever Ozzen Surveillance Grid blocks, scry 1.

When Patron of Ephara's Glory enters, create a 0/1 colorless Sculpture artifact creature token.
Whenever a creature you control dies, scry 1, then you gain 1 life.

Flying
Whenever you attack, target attacking creature gets +1/+1 until end of turn. If you control a green permanent, instead put a +1/+1 counter on that creature.

First strike
When Photon Collector enters, scry 2.

Return up to one target artifact, enchantment, or land card from your graveyard to your hand.
Create two Berry tokens.

Enchant nonland permanent
Whenever a nonland permanent you control enters, if its mana value is greater than enchanted permanent's, exile enchanted permanent.

Once each turn, when you activate a creature, you may create a tapped token that's a copy of it, except it's a 1/1 Toy in addition to its other types and it isn't legendary.

Flying
When Powerline Warbler enters, return target artifact card from your graveyard to your hand.

When Practicing Guru enters, create a Berry token.
Practicing Guru gets +1/+1 as long as you've sacrificed a Berry that was attached to it this turn.
Sacrifice a Berry attached to Practicing Guru: It gains indestructible until end of turn.

Vigilance
{W}, {T}: Tap target creature with power 2 or less.
Cybersoul {3}{W}