Enchant creature
Whenever enchanted creature becomes the target of a spell or ability, put a +1/+1 counter on it and that creature deals 1 damage to each opponent. This ability triggers no more than twice each turn.

Whenever Spikemane Lion dies, you may bless target creature.

As an additional cost to cast this spell, exile two permanent cards from your graveyard.
Whenever Spikey, Jack's Gravetiller deals combat damage to a player, return a card exiled with it to its owner's hand.
You may cast Spikey from your graveyard.

Whenever this creature deals combat damage to a player or planeswalker, put a +1/+1 counter on it.

As this artifact enters, choose two different colors.
Each spell you cast that's one or more of the chosen colors costs {1} less to cast.

Flying, haste
Whenever one or more +1/+1 counters are put on this creature, it deals that much damage to each opponent.
At the beginning of your end step, return this card from your graveyard to your hand if one or more +1/+1 counters were put on a creature you control this turn.

When this enchantment enters, it deals X damage to each creature.
Whenever one or more creatures your opponents control die, you create a Treasure token. This ability triggers only once each turn.

Level up {2}{B}
[level 1-2] Other creatures get -1/-1.
[level 3+] Creatures your opponents control get -1/-1.

Destroy target creature or planeswalker. Create a Treasure token.
Cycling {2}

Amity — Whenever you attack with Splashing Mudskipper and exactly one other creature, surveil 1. When Splashing Mudskipper deals combat damage to a player this combat, you may transform it.

When this creature transforms into Splintered Soul, create X 3/1 colorless Cyborg Soldier artifact creature tokens.
Whenever Splintered Soul or another Cyborg you control dies, you gain 1 life.

Splintering Blast deals 4 damage to target creature. If you controlled a creature with menace as you cast this spell, instead Splintering Blast deals 4 damage divided as you choose among up to two target creatures.

Deathtouch

Menace
Amity — Whenever you attack with Splitting Smog and exactly one other creature, you may pay {1}{R}. If you do, attacking creatures you control get +2/+0 until end of turn.

Landfall — Whenever a land you control enters, put a +1/+1 counter on Spore Collector. It gains your choice of vigilance, first strike, or lifelink until end of turn.

Create a 1/1 green Saproling creature token for each permanent card you own in your graveyard and in exile.
Flashback {2}{G}{G}

As an additional cost to cast this spell, exile any number of permanent cards from your graveyard. This spell costs {1} less to cast for each card exiled this way.
Deathtouch
When Sporeback Jargah dies, return a card exiled with it of an opponent's choice to its owner's hand.

Flying
Springsoarer enters with a +1/+1 counter on it if a creature you controlled dealt combat damage to a player this turn.
Wander {2}{U}

Flying
When Squallrunner Duo enters, create a 1/1 white Human creature token.
Nontoken creatures you control that have attacked this turn have wander {2}.

This land enters tapped.
Level up {W}{W}{W}
[level 1-2] Lifelink
This land is also a creature.
[level 3+] Lifelink
This land is also a creature.

Level up {1}{W}
[level 2-3] This creature has first strike during your turn.
[level 4+] This creature has first strike during your turn.

{T}: Surveil 1.
{1}, {T}: Tap target creature.
{2}, {T}: Draw a card.
Flow — {3}: Untap this artifact.

Return target creature card with mana value 3 or less from your graveyard to the battlefield with an exalted counter on it.

Flash
Whenever you cast a spell during an opponent's turn, tap up to one target artifact or creature.

Create two 1/1 green Elf creature tokens. Then if there are six or more different creature types among creatures you control, put a +1/+1 counter on each of those tokens.
Draw a card.