Landfall — Whenever a land you control enters, you may have target player lose 3 life. If you do, put three +1/+1 counters on Ob Nixilis.

When this creature enters, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each in the mana costs of permanents you control counts toward your devotion to black.)

Deathtouch, lifelink
If a permanent entering causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

If you would gain life, you gain twice that much life instead.
If you would draw a card except the first one you draw in each of your draw steps, draw two cards instead.

At the beginning of your upkeep, if this creature is in your graveyard, you may pay . If you do, return target creature card from your graveyard to your hand.

Other Treefolk creatures you control get +1/+1.
Other Treefolk and Forests you control have indestructible.

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.

Whenever you cast a noncreature spell, create an X/X blue Shark creature token with flying, where X is that spell's mana value.
Cycling (, Discard this card: Draw a card.)
When you cycle this card, create an X/X blue Shark creature token with flying.

+1: Create three 1/1 white Soldier creature tokens.
−3: Destroy all creatures with power 4 or greater.
−7: You get an emblem with "Creatures you control get +2/+2 and have flying."

Flying
: This creature gets +1/+0 until end of turn.

Vigilance
Whenever this creature enters or attacks, you may return target permanent card with mana value 3 or less from your graveyard to the battlefield.

Destroy all creatures and lands.

Return any number of permanent cards with different names from your graveyard to the battlefield.

Until end of turn, creatures you control get +5/+5 and gain first strike, trample, and lifelink.

+2: Target opponent exiles cards from the top of their library until they exile a nonland card. Until end of turn, you may cast that card without paying its mana cost.
+1: Each opponent exiles two cards from their hand.
−4: Nicol Bolas deals 7 damage to target opponent, creature an opponent controls, or planeswalker an opponent controls.
−12: Exile each nonland permanent your opponents control.

Each player's life total becomes the number of creatures they control.

Flash
Flying
When this creature enters, it deals 5 damage divided as you choose among any number of targets.