Trample
When this creature enters, you may sacrifice two nonland, non-Serpent permanents. If you do, create a 6/6 green Serpent creature token with trample. Repeat this process any number of times.

Time loop
I — Create a 1/1 green Spirit creature token.
II — Put a +1/+1 counter on target creature you control.
III — Put a +1/+1 counter on each creature you control with a +1/+1 counter on it.

Put a +1/+1 counter on each creature you control. They get +1/+1 and gain trample until end of turn.
Cycling {2}

Whenever another creature you control enters, if that creature's power is greater than this creature's power, you may put a +1/+1 counter on this creature.
{2}{G}: Move any number of +1/+1 counters from this creature to another target creature you control. Activate only as a sorcery.

Target creature you control deals damage equal to its power to target creature or planeswalker an opponent controls.

Ninjutsu {G}
Whenever this creature deals combat damage to a player, put a +1/+1 counter on target creature you control that doesn't have a +1/+1 counter on it.

Ninjutsu {2}{G}
When this creature enters, creatures you control gain trample until end of turn.

When this enchantment enters, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
{3}{G}: Put a +1/+1 counter on target creature you control. Activate only as a sorcery.

Enchant creature
When this Aura enters, draw a card.
If one or more +1/+1 counters would be put on enchanted creature, that many plus one +1/+1 counters are put on it instead.

Revered
{T}: Add {G}.

Search your library for up to two Forest cards, reveal them, put them into your hand, then shuffle.

Reach
{T}: You may put a land card from your hand onto the battlefield tapped.

Put a +1/+1 counter on target creature. It gains trample until end of turn.

When this enchantment enters and whenever you draw your second card each turn, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
Cycling {G}

Ninjutsu {2}{G}
When this creature enters, another target creature you control gains indestructible until end of turn. Untap it.

Creatures you control get +X/+X and gain vigilance and trample until end of turn, where X is the number of Forests you control plus the number of cards with a cycling ability in your graveyard.
Forestcycling {2}

Revered
Trample

Put a +1/+1 counter on each creature you control.
Cycling {1}{G}
When you cycle this card, put a +1/+1 counter on target creature you control.

Equipped creature gets +1/+1.
Ninjutsu abilities you activate cost {1} less to activate.
Whenever a Ninja creature you control enters, you may attach Arushi to that creature.
Equip {1}

Draw two cards, then discard a card. You may cast a spell with mana value 3 or less from your hand without paying its mana cost.

Deathtouch

Whenever a nontoken creature you control enters, surveil 1.
{G}, Exile this enchantment: Return target card from your graveyard to your hand. Activate only as a sorcery.

Ward {2}
If you would put one or more counters on a permanent or player, put three times as many of each of those kinds of counters on that permanent or player instead.

Revered
Whenever this creature attacks, create a tapped and attacking token that's a copy of it. For each counter on this creature, put a counter of that kind on that token. Sacrifice the token at the end of combat.