Flash

Adaptive Shimmerer enters the battlefield with three +1/+1 counters on it.

Whenever Arcbound Slith deals combat damage to a player, put a +1/+1 counter on it.

Modular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Enrage -- Whenever Bellowing Aegisaur is dealt damage, put a +1/+1 counter on each other creature you control.

Blossoming Sands enters the battlefield tapped.

When Blossoming Sands enters the battlefield, you gain 1 life.

{T}: Add {G} or {W}.

Botanical Plaza enters the battlefield tapped.

{T}: Add {G} or {W}.

{2}{G}{W}, {T}, Sacrifice Botanical Plaza: Draw a card.

Bretagard Stronghold enters the battlefield tapped.

{T}: Add {G}.

{G}{W}{W}, {T}, Sacrifice Bretagard Stronghold: Put a +1/+1 counter on each of up to two target creatures you control. They gain vigilance and lifelink until end of turn. Activate only as a sorcery.

When Caldaia Strongarm enters the battlefield, put two +1/+1 counters on target creature.

Blitz {3}{G} (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)

Amplify 1 (As this creature enters the battlefield, put a +1/+1 counter on it for each Beast card you reveal in your hand.)

{T}: Target creature gets +1/+1 until end of turn for each +1/+1 counter on Canopy Crawler.

Choose target permanent card in your graveyard. If it has mana value 3 or less, you may put it onto the battlefield. If you don't put it onto the battlefield, put it into your hand.

You gain 3 life.

At the beginning of your upkeep, mill a card. Then if there are three or more creature cards in your graveyard, transform Deathbonnet Sprout. (To mill a card, put the top card of your library into your graveyard.)

At the beginning of your upkeep, you may exile a card from a graveyard. If a creature card was exiled this way, put a +1/+1 counter on Deathbonnet Hulk.

{2}, {T}: Put a +1/+1 counter on Drillworks Mole and a +1/+1 counter on up to one target commander creature you control.

Sunburst (This enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.)

{1}, Remove four +1/+1 counters from Etched Oracle: Target player draws three cards.

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.)

Remove two +1/+1 counters from Experiment One: Regenerate Experiment One.

Landfall -- Whenever a land enters the battlefield under your control, put a +1/+1 counter on Fearless Fledgling. It gains flying until end of turn.

Graypelt Refuge enters the battlefield tapped.

When Graypelt Refuge enters the battlefield, you gain 1 life.

{T}: Add {G} or {W}.

Changeling (This card is every creature type.)

When Guardian Gladewalker enters the battlefield, put a +1/+1 counter on target creature.

Trample

{3}{G}: Put a +1/+1 counter on target creature.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Trample

Other Wolves and Werewolves you control have trample.

{3}{G}: Put a +1/+1 counter on target creature.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

When Ich-Tekik, Salvage Splicer enters the battlefield, create a 3/3 colorless Phyrexian Golem artifact creature token.

Whenever an artifact is put into a graveyard from the battlefield, put a +1/+1 counter on Ich-Tekik and a +1/+1 counter on each Golem you control.

Partner (You can have two commanders if both have partner.)

When Ingenious Smith enters the battlefield, look at the top four cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Whenever one or more artifacts enter the battlefield under your control, put a +1/+1 counter on Ingenious Smith. This ability triggers only once each turn.

Krosan Verge enters the battlefield tapped.

{T}: Add {C}.

{2}, {T}, Sacrifice Krosan Verge: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.

When Kujar Seedsculptor enters the battlefield, put a +1/+1 counter on target creature you control.

Myriad Landscape enters the battlefield tapped.

{T}: Add {C}.

{2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

At the beginning of combat on your turn, you may pay {X}{X}. When you do, distribute X +1/+1 counters among any number of target Elves.

Partner (You can have two commanders if both have partner.)

At the beginning of your upkeep, each player may put two +1/+1 counters on a creature they control. If a player does, creatures that player controls can't attack you or planeswalkers you control until your next turn.

Path of Ancestry enters the battlefield tapped.

{T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

({T}: Add {G} or {W}.)

Radiant Grove enters the battlefield tapped.

Trample

Whenever Rampaging Brontodon attacks, it gets +1/+1 until end of turn for each land you control.

When Satyr Grovedancer enters the battlefield, put a +1/+1 counter on target creature.

Selesnya Sanctuary enters the battlefield tapped.

When Selesnya Sanctuary enters the battlefield, return a land you control to its owner's hand.

{T}: Add {G}{W}.

Spike Colony enters the battlefield with four +1/+1 counters on it.

{2}, Remove a +1/+1 counter from Spike Colony: Put a +1/+1 counter on target creature.

Exile target creature. Its controller gains life equal to its power.

Flying

Tetravus enters the battlefield with three +1/+1 counters on it.

At the beginning of your upkeep, you may remove any number of +1/+1 counters from Tetravus. If you do, create that many 1/1 colorless Tetravite artifact creature tokens. They each have flying and "This creature can't be enchanted."

At the beginning of your upkeep, you may exile any number of tokens created with Tetravus. If you do, put that many +1/+1 counters on Tetravus.

Thornglint Bridge enters the battlefield tapped.

Indestructible

{T}: Add {G} or {W}.

When Timberland Guide enters the battlefield, put a +1/+1 counter on target creature.

Tranquil Expanse enters the battlefield tapped.

{T}: Add {G} or {W}.

Whenever you gain life, put a +1/+1 counter on Trelasarra, Moon Dancer and scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Vigilance

Enrage -- Whenever Urban Daggertooth is dealt damage, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)