Double strike
Whenever an enchantment you control enters, you may create a token that's a copy of it, except the token isn't legendary and has exalted. Do this only once each turn.

Matter Harvester has protection from mana values less than the number of artifacts you control.
Whenever a nonland permanent you don't control leaves the battlefield, create a 1/1 colorless Cyborg artifact creature token.

You gain 2 life and draw two cards.
Cycling {2}

Target artifact or creature's owner puts it on the top or bottom of their library.
Flashback {5}{U}{U}

Flying
{5}: Draw a card. Activate only if your devotion to blue is three or greater.

Level up {2}{W}
[level 1-3] Other creatures you control get +1/+0.
[level 4+] Other creatures you control get +2/+0.

When Mokar Cliffbreaker enters, you may exile a land card from your graveyard. If you do, you gain 4 life.
Wander {5}{G}{G}

Ward—Sacrifice a permanent.
Whenever you cast a spell that targets Molpadia, the Last Acephali, exile the top card of your library. You may play it this turn.

Tap up to two target creatures. Put a stun counter on each of them.

Vigilance
When this creature enters, create three 1/1 white Monk creature tokens with vigilance.

Landfall — Whenever a land you control enters, you gain 2 life. Then if you control a Mountain and a Plains, each opponent loses 2 life.

When Moving Mountains enters, search your library for a land card, put it onto the battlefield tapped, then shuffle.
If a Ruin you control would stop being a creature, it becomes a creature in addition to its other types for as long as you control Moving Mountains.

When this creature enters, create a 1/1 white Monk creature token with vigilance.
Flow — {3}{U}: This creature can't be blocked this turn.

Favored
Whenever your Champion attacks, creatures you control with power 4 or greater get +1/+1 and gain trample until end of turn.

Creatures you control with counters on them have all activated abilities of other creatures you control with counters on them.
{1}, {T}: Teach target creature vigilance.

When Night Squad enters, teach target creature menace. If you put a +1/+1 counter on it this way, it can't be blocked this turn.

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

Flash
Lifelink
When Nikon, Skophos Protector enters, the next time a source of your choice would deal damage to you or a permanent you control this turn, prevent that damage. If damage is prevented this way, Nikon deals that much damage to that source's controller.

Ninjutsu {2}{G}{U}
You may pay {0} rather than pay the ninjutsu cost of the first ninjutsu ability you activate each turn.

Flying
Amity — Whenever you attack with Nimbus Dragon and exactly one other creature, tap target creature defending player controls.

When Nocturne, Monstrous Krasis enters and at the beginning of your upkeep, put X +1/+1 counters on Nocturne, where X is the number of different kinds of counters on permanents you control.

All creatures get -2/-2 until end of turn. Until end of turn, whenever one of those creatures die, create a tapped Treasure token.

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.

Flying, lifelink, haste
This creature can't block.
When this creature enters, if it was cast, create a red and white Subroutine enchantment token named OVERFLOW with “Whenever this Subroutine runs, return a card named Offset Daemon from your graveyard to the battlefield.”

Whenever an enchantment you control enters, each opponent mills two cards.