As a historic permanent you control enters, it becomes a 7/7 Dinosaur creature in addition to its other types. (Artifacts, legendaries, and Sagas are historic.)

Whenever this creature blocks or becomes blocked by a creature, destroy that creature. You gain life equal to that creature's toughness.

Mill seven cards. Then put a creature, enchantment, or land card from among the milled cards onto the battlefield.

Hexproof
Flora Colossus's power and toughness are each equal to the number of lands you control.

Flying
When this creature enters, you may have it fight target creature you don't control.
Whenever a creature you control fights, put two +1/+1 counters on it at the beginning of the next end step.

This spell can't be countered.
Haste
This creature can't be the target of nongreen spells or abilities from nongreen sources.

Trample
Play with the top card of your library revealed.
You may cast creature spells from the top of your library. (Do this only any time you could cast that creature spell. You still pay the spell's costs.)

Trample
This creature can block an additional creature each combat.

Trample
Whenever this creature deals combat damage to a player, create a token that's a copy of this creature.

This spell can't be countered.
Hexproof, haste

Trample
When this creature enters, create a Lander token.
Landfall — Whenever a land you control enters, creatures you control get +1/+1 and gain vigilance and haste until end of turn.

When this creature enters, support 6.
Whenever a creature you control with a +1/+1 counter on it dies, you gain 2 life.

Whenever you cast a permanent spell with in its mana cost or activate an ability with in its activation cost that isn't a mana ability, you may have the value of X become 5. Do this only once each turn.

Reach
When this creature enters, distribute three +1/+1 counters among one, two, or three target creatures, then you gain life equal to the greatest toughness among creatures you control.

This creature can't be blocked by creatures with power 2 or less.
Cycling

When this creature enters, create three 1/1 white Kithkin Soldier creature tokens.
, Sacrifice a Kithkin: You gain 1 life.

Bargain
This spell costs less to cast if it's bargained.
Trample
When this creature enters, you gain 3 life.

Reach
Undergrowth — When you cast this spell, reveal the top X cards of your library, where X is the number of creature cards in your graveyard. You may put a green permanent card with mana value X or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

Reach
When this creature enters, create two 2/2 green Wolf creature tokens.

Create a 4/4 green Beast creature token.
Storm

10,000 Needles — Whenever this creature attacks, it gets +9999/+0 until end of turn.

Reach
Cycling

Choose a creature type. Reveal cards from the top of your library until you reveal X creature cards of the chosen type, where X is the number of creatures you control of that type. Put those cards onto the battlefield, then shuffle the rest of the revealed cards into your library.

Cycling
When you cycle this card, you may search your library for a basic land card, reveal that card, put it into your hand, then shuffle.

Trample, haste
Whenever Leatherhead attacks, put two +1/+1 counters on each creature you control.

Rulebreaker — A deck with this commander can have creature cards with mana value 7 or greater of any color identity and any basic land cards.
Whenever a creature you control with mana value 7 or greater attacks, double its power and toughness until end of turn.

Trample
When this creature enters, you gain 5 life.

If this creature would be destroyed, regenerate it.
Tap any number of untapped creatures you control other than this creature with total power 10 or greater: This creature gets +20/+20 until end of turn.