When this creature enters, you may mill three cards. (You may put the top three cards of your library into your graveyard.)

: Add an amount of equal to this creature's power.

: Add an amount of equal to this creature's power.

When Rishkar enters, put a +1/+1 counter on each of up to two target creatures.

Each creature you control with a counter on it has ": Add ."

Vigilance

Whenever another Human you control enters, put a +1/+1 counter on this creature.

: Add X mana of any one color, where X is this creature's power.

Other Elf creatures you control get +1/+1.

: Add for each Elf you control.

When this creature enters, add one mana of any color.

Whenever another creature you control with power 4 or greater enters, draw a card.

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

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

Landfall — Whenever a land you control enters, this creature gets +2/+2 until end of turn.

Tokens you control have ": Add ."

Choose a Background (You can have a Background as a second commander.)

At the beginning of your end step, conjure a card named Slimy Dualleech onto the battlefield if you control no Leeches. Otherwise, put a +1/+1 counter on each Leech you control.

, Sacrifice a creature: Add an amount of equal to the sacrificed creature's power.

Whenever another green creature you control enters, put a +1/+1 counter on target creature.

Whenever you cast a creature spell with mana value 5 or greater, that creature enters with X additional +1/+1 counters on it, where X is its mana value minus 4.

Creatures you control with three or more +1/+1 counters on them have haste.

: Add .

: Add .

Whenever a nontoken creature enters the battlefield under your control, put a +1/+1 counter on it.

: Add .

Put a -1/-1 counter on this creature: Untap this creature.

Whenever another Merfolk you control enters, put a +1/+1 counter on target Merfolk you control.

: Add . 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.)

Whenever this creature or equipped creature attacks, add an amount of equal to its power. Until end of turn, you don't lose this mana as steps and phases end.

Reconfigure (: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Whenever another creature enters, its controller may draw a card if its power is greater than each other creature's power.

, : Add X mana in any combination of colors, where X is the greatest power among creatures you control.