Enchant creature
Enchanted creature gets +3/+3, has trample, and can't attack you or planeswalkers you control.

Meteor Blast deals 4 damage to each of X targets.

At the beginning of your upkeep, each player may put two +1/+1 counters on a creature they control. If a player does, creatures that player controls can't attack you or planeswalkers you control until your next turn.

When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield.

Reveal the top ten cards of your library. Starting with the next opponent in turn order, each opponent chooses a different nonland card from among them. Put the chosen cards into your hand and the rest on the bottom of your library in a random order.

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

Flying
When this creature enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Whenever an opponent casts a spell, that player mills two cards.

When this creature dies, you may search your library for up to two basic land cards, reveal them, put them into your hand, then shuffle.
, Sacrifice this creature: Draw a card.

Sacrifice this creature: You gain 3 life.

, : Draw a card, then discard a card.

Flash
When this creature enters, copy target instant or sorcery spell. You may choose new targets for the copy.

Fumiko has bushido X, where X is the number of attacking creatures. (Whenever this creature blocks or becomes blocked, it gets +X/+X until end of turn.)
Creatures your opponents control attack each combat if able.

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.

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.

Double strike, vigilance
Whenever you cast a creature spell with mana value 5 or greater, you get an experience counter.
Kalemne gets +1/+1 for each experience counter you have.

+2: Discard up to two cards, then draw that many cards.
−2: Sacrifice an artifact. If you do, return target artifact card from your graveyard to the battlefield.
−10: You get an emblem with "Whenever an artifact is put into your graveyard from the battlefield, return that card to the battlefield at the beginning of the next end step."
Daretti, Scrap Savant can be your commander.

Draw cards equal to the number of cards in your hand, then discard a card for each card drawn this way.
Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Trample
As long as this card is in your graveyard and you control a Forest, creatures you control have trample.

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
When this creature dies, you may draw a card.

, , Discard a card: You gain 4 life.
, , Pay 1 life: Create a 0/1 white Goat creature token.
, , Sacrifice a creature: Return target artifact card from your graveyard to your hand.
, , Sacrifice an artifact: Draw a card.

Each other creature becomes a copy of target nonlegendary creature until end of turn.

When this creature enters, return to your hand the creature card in your graveyard with the greatest power. If two or more cards are tied for greatest power, you choose one of them.

If one or more +1/+1 counters would be put on a creature you control, twice that many +1/+1 counters are put on it instead.

Flying
Whenever an opponent casts a spell, put a +1/+1 counter on Ishai.
Partner (You can have two commanders if both have partner.)

Converge — This creature enters with a +1/+1 counter on it for each color of mana spent to cast it.
Remove a +1/+1 counter from this creature: Add one mana of any color.
: Put a +1/+1 counter on this creature.

As this creature enters, choose a player.
Sewer Nemesis's power and toughness are each equal to the number of cards in the chosen player's graveyard.
Whenever the chosen player casts a spell, that player mills a card.

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

Flying
As long as this card is in your graveyard and you control an Island, creatures you control have flying.

Flying, vigilance, deathtouch, lifelink
At the beginning of your end step, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Each other player discards a card. You draw a card for each card discarded this way.

Kicker (You may pay an additional as you cast this spell.)
When this creature enters, destroy all other creatures you control. If it was kicked, destroy all other creatures instead.

Whenever a creature you control dies, each other player sacrifices a creature of their choice.

Mortivore's power and toughness are each equal to the number of creature cards in all graveyards.
: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Whenever a player casts a spell, you may put a +1/+1 counter on this creature.
At the beginning of your upkeep, you may move any number of +1/+1 counters from this creature onto other creatures.

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