As long as it's your turn, commanders you control have indestructible. (Effects that say "destroy" don't destroy them. A creature with indestructible can't be destroyed by damage.)

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

Put a +1/+1 counter on target creature you control if it's legendary. Then it fights target creature an opponent controls. (Each deals damage equal to its power to the other.)

Put a +1/+1 counter on target creature. That creature gains reach until end of turn.

Whenever equipped creature attacks, put a +1/+1 counter on it.

Equip {2} ({2}: Attach to target creature you control. Equip 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.)

Each opponent sacrifices a creature with flying.

Enchant creature

When Colossification enters the battlefield, tap enchanted creature.

Enchanted creature gets +20/+20.

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

When Duskshell Crawler enters the battlefield, put a +1/+1 counter on target creature.

Each creature you control with a +1/+1 counter on it has trample.

Green spells you cast cost {1} less to cast.

Reach (This creature can block creatures with flying.)

Whenever Ezuri's Archers blocks a creature with flying, Ezuri's Archers gets +3/+0 until end of turn.

Exile target artifact or enchantment.

{T}: Femeref Archers deals 4 damage to target attacking creature with flying.

Prevent all combat damage that would be dealt this turn.

Equipped creature gets +3/+0 and has vigilance and trample.

Whenever equipped creature dies, attach Forebear's Blade to target creature you control.

Equip {3}

({T}: Add {G}.)

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({T}: Add {G}.)

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

As long as Gaea's Liege isn't attacking, its power and toughness are each equal to the number of Forests you control. As long as Gaea's Liege is attacking, its power and toughness are each equal to the number of Forests defending player controls.

{T}: Target land becomes a Forest until Gaea's Liege leaves the battlefield.

Trample

Whenever Giant Adephage deals combat damage to a player, create a token that's a copy of Giant Adephage.

{T}: Add {G}. When you spend this mana to cast a spell with mana value 6 or greater, draw a card.

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

({T}: Add {G}.)

Gingerbread Cabin enters the battlefield tapped unless you control three or more other Forests.

When Gingerbread Cabin enters the battlefield untapped, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

First strike

{T}: Destroy target artifact if its mana value is equal to the amount of unspent mana you have.

Equipped creature has vigilance, trample, and haste.

Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Flying, deathtouch

When Hornet Queen enters the battlefield, create four 1/1 green Insect creature tokens with flying and deathtouch.

When Hunted Troll enters the battlefield, target opponent creates four 1/1 blue Faerie creature tokens with flying.

{G}: Regenerate Hunted Troll.

Destroy all enchantments.

Cycling {2} ({2}, Discard this card: Draw a card.)

Whenever another green creature enters the battlefield under your control, put a +1/+1 counter on target creature.

Kalonian Twingrove's power and toughness are each equal to the number of Forests you control.

When Kalonian Twingrove enters the battlefield, create a green Treefolk Warrior creature token with "This creature's power and toughness are each equal to the number of Forests you control."

{T}: Add an amount of {G} equal to your devotion to green. (Each {G} in the mana costs of permanents you control counts toward your devotion to green.)

Reach

Whenever another permanent enters the battlefield under your control, if it wasn't put onto the battlefield with this ability, you may put a permanent card with equal or lesser mana value from your hand onto the battlefield.

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

As long as Kosei, Penitent Warlord is enchanted, equipped, and has a counter on it, Kosei has "Whenever Kosei, Penitent Warlord deals combat damage to an opponent, you draw that many cards and Kosei deals that much damage to each other opponent."

Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

{T}, Sacrifice Llanowar Druid: Untap all Forests.

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

Cast this spell only if an opponent cast a creature spell this turn.

You may put a green creature card from your hand onto the battlefield.

Hideaway 4 (When this land enters the battlefield, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)

Mosswort Bridge enters the battlefield tapped.

{T}: Add {G}.

{G}, {T}: You may play the exiled card without paying its mana cost if creatures you control have total power 10 or greater.

Destroy target artifact or enchantment.

Indestructible

As long as your devotion to green is less than five, Nylea isn't a creature. (Each {G} in the mana costs of permanents you control counts toward your devotion to green.)

Other creatures you control have trample.

{3}{G}: Target creature gets +2/+2 until end of turn.

You don't lose unspent green mana as steps and phases end.

Omnath, Locus of Mana gets +1/+1 for each unspent green mana you have.

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 Nylea.

When you sacrifice Ordeal of Nylea, search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Enchant land

Whenever enchanted land is tapped for mana, its controller adds an additional {G}{G}.

Destroy target creature with flying.

Primordial Hydra enters the battlefield with X +1/+1 counters on it.

At the beginning of your upkeep, double the number of +1/+1 counters on Primordial Hydra.

Primordial Hydra has trample as long as it has ten or more +1/+1 counters on it.

Target creature you control deals damage equal to its power to target creature you don't control.

Green creature spells you cast cost {1} less to cast.

Whenever you cast a creature spell, target creature you control gets +2/+2 and gains trample until end of turn.

You may have Rhox assign its combat damage as though it weren't blocked.

{2}{G}: Regenerate Rhox. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Equipped creature has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)

At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's green.

Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

This spell costs {2} less to cast if it targets a Dinosaur you control.

Put a +1/+1 counter on target creature you control. Then that creature fights target creature you don't control. (Each deals damage equal to its power to the other.)

Equipped creature has skulk. (It can't be blocked by creatures with greater power.)

Whenever equipped creature deals combat damage to a player, you may draw a card. If you do, discard a card.

Equip {2}

Skyreaping deals damage to each creature with flying equal to your devotion to green. (Each {G} in the mana costs of permanents you control counts toward your devotion to green.)

{T}: Add three mana of any one color. Spend this mana only to cast creature spells.

Indestructible

{1}: Target creature with power 5 or greater gains indestructible until end of turn.

Equipped creature gets +1/+0.

Whenever equipped creature deals combat damage to a player, that player discards a card.

Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)

Steel Leaf Champion can't be blocked by creatures with power 2 or less.

Whenever Stone-Tongue Basilisk deals combat damage to a creature, destroy that creature at end of combat.

Threshold -- As long as seven or more cards are in your graveyard, all creatures able to block Stone-Tongue Basilisk do so.

Equipped creature has first strike and "{T}, Unattach Surestrike Trident: This creature deals damage equal to its power to target player or planeswalker."

Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

When Tornado Elemental enters the battlefield, it deals 6 damage to each creature with flying.

You may have Tornado Elemental assign its combat damage as though it weren't blocked.

When Treefolk Harbinger enters the battlefield, you may search your library for a Treefolk or Forest card, reveal it, then shuffle and put that card on top.

Trample

If damage would be dealt to another creature you control, prevent that damage. Put a +1/+1 counter on that creature for each 1 damage prevented this way.

When Vigor is put into a graveyard from anywhere, shuffle it into its owner's library.

Destroy target blue or black creature with flying.

Trample

When Worldspine Wurm dies, create three 5/5 green Wurm creature tokens with trample.

When Worldspine Wurm is put into a graveyard from anywhere, shuffle it into its owner's library.

Yorvo, Lord of Garenbrig enters the battlefield with four +1/+1 counters on it.

Whenever another green creature enters the battlefield under your control, put a +1/+1 counter on Yorvo. Then if that creature's power is greater than Yorvo's power, put another +1/+1 counter on Yorvo.