Put a +1/+1 counter on target creature you control, then double the number of +1/+1 counters on each creature that had a +1/+1 counter put on it this way. Overload {4}{G}{G} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Put a +1/+1 counter on target creature you control, then double the number of +1/+1 counters on that creature.

If one or more +1/+1 counters would be put on a permanent you control, that many plus one +1/+1 counters are put on that permanent instead. {T}: Add X mana of any one color, where X is this creature's power.

Each other creature you control enters with a number of additional +1/+1 counters on it equal to this creature's power and as a Mutant in addition to its other types.

If one or more +1/+1 counters would be put on an artifact or creature you control, that many plus one +1/+1 counters are put on it instead. {1}{G}, {T}: Put a +1/+1 counter on target artifact or creature you control. Activate only as a sorcery. Cycling {2} ({2}, Discard this card: Draw a card.)

Strive — This spell costs {1}{G} more to cast for each target beyond the first. Choose any number of target creatures. Double the number of +1/+1 counters on each of them.

When this creature enters, draw a card for each creature you control with a +1/+1 counter on it.

Commander creatures you own have "{2}, Sacrifice an artifact: Put a +1/+1 counter on this creature and draw a card."

Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) Draw a card.

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Whenever a +1/+1 counter is put on this creature, you may draw a card.

Look at the top X cards of your library, where X is the number of artifacts you control. Put one of those cards into your hand and the rest on the bottom of your library in any order.

{3}{U}, {T}, Tap X untapped artifacts you control: Look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

You have no maximum hand size. Sonic Booster — Whenever Nyssa of Traken attacks, sacrifice any number of artifacts. When you sacrifice one or more artifacts this way, tap up to that many target creatures and draw that many cards. Doctor's companion (You can have two commanders if the other is the Doctor.)

{T}, Sacrifice an artifact: Draw a card.

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Trample Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Defender Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Flying Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Reach (This creature can block creatures with flying.) Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) When this creature dies, you may discover X, where X is its toughness.

This creature can't be blocked. Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Remove two +1/+1 counters from this creature: Regenerate it. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Whenever this creature evolves, put a +1/+1 counter on each other creature you control with a +1/+1 counter on it.

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Whenever one or more +1/+1 counters are put on this creature, you may create a 1/1 green Squirrel creature token.

Flash (You may cast this spell any time you could cast an instant.) Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) {1}{U}, {T}: Move a +1/+1 counter from this creature onto target creature.

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) {T}, Remove one or more +1/+1 counters from this creature: Gain control of target creature with power less than or equal to the number of +1/+1 counters removed this way.

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Synapse Creature — Other creatures you control have evolve.

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Whenever this creature evolves, create a token that's a copy of it.

{T}: Add one mana of any color in your commander's color identity.

({T}: Add {G}.)

({T}: Add {U}.)

This land enters tapped. {T}: Add {U}. {2}{G}{G}{U}, {T}, Sacrifice this land: Create a token that's a copy of target creature you control, except it enters with an additional +1/+1 counter on it. Activate only as a sorcery.

This land enters tapped. {T}: Add {G} or {U}. {4}, {T}: Scry 1.

({T}: Add {G} or {U}.) This land enters tapped.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {G}{U}.

This land enters tapped. {T}: Add {G} or {U}.

({T}: Add {G} or {U}.) This land enters tapped.

This land enters tapped. When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.) {T}: Add {G} or {U}.

This land enters tapped. When this land enters, you gain 1 life. {T}: Add {G} or {U}.

As this land enters, you may reveal a Forest or Island card from your hand. If you don't, this land enters tapped. {T}: Add {G} or {U}.

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Counter target spell.

Put X +1/+1 counters on target creature you control. Then counter up to one target spell unless its controller pays mana equal to the greatest power among creatures you control.

As an additional cost to cast this spell, sacrifice an artifact. Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.

At the beginning of your upkeep, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") {T}, Sacrifice three Clues: Search your library for a card, put that card into your hand, then shuffle.

If you would create a Clue, Food, or Treasure token, instead create one of each.

When this creature enters, you may return target card from your graveyard to your hand.

Five Hundred Year Diary enters tapped. {T}: Add {U} for each Clue you control. {2}, Sacrifice Five Hundred Year Diary: Draw a card.

Whenever you sacrifice a Clue, you gain 3 life.

Whenever another nontoken creature you control enters, investigate. {T}, Sacrifice X Clues: Target opponent reveals the top X cards of their library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield under your control. That player puts the rest on the bottom of their library in a random order.

{1}{G}, Remove one or more +1/+1 counters from among creatures you control: Create an X/X green Ooze creature token, where X is the number of +1/+1 counters removed this way.

Untap all permanents you control during each other player's untap step.

Deathtouch When this creature enters, return target card from your graveyard to your hand, then choose an opponent. That player returns a card from their graveyard to their hand.

Whenever a nontoken creature you control dies, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") Whenever you sacrifice a Clue, create a 1/1 white Human Soldier creature token.

When Urza enters, create a 0/0 colorless Construct artifact creature token with "This token gets +1/+1 for each artifact you control." Tap an untapped artifact you control: Add {U}. {5}: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost.

Flying Other artifact creatures you control have flying. When this creature enters, until end of turn, each noncreature artifact you control becomes an artifact creature with base power and toughness 4/4.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Ward {4} Whenever this creature or another artifact you control enters, put a +1/+1 counter on this creature and it can't be blocked this turn.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Whenever you cast an artifact spell, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") Activated abilities of artifacts you control cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) {T}: Add {G} for each +1/+1 counter on this creature.

Tokens you control have "{T}: Add {G}." Choose a Background (You can have a Background as a second commander.)

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Sacrifice this creature: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Destroy all artifacts and enchantments. For each permanent destroyed this way, its controller creates a 3/3 green Centaur creature token.