Whenever you discard a creature card, create a 2/2 black Zombie creature token.
Whenever you discard a land card, add .
Whenever you discard a noncreature, nonland card, draw a card.

, : Create a 1/1 green and white Elf Warrior creature token.
, : For each creature token you control, create a token that's a copy of that creature.

Each player may put an artifact, creature, enchantment, or land card from their hand onto the battlefield.

Target player takes an extra turn after this one.

: Look at the top three cards of your library, then put them back in any order.
: Draw a card, then put this artifact on top of its owner's library.

: Add . This creature deals 1 damage to you.

Other Elf creatures get +1/+1 and have forestwalk. (They can't be blocked as long as defending player controls a Forest.)

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

Flying
Whenever Ultron enters or attacks, create a 2/2 colorless Robot Villain artifact creature token.
Whenever another artifact is put into your graveyard from the battlefield or an artifact card is put into your graveyard from anywhere other than the battlefield, each opponent loses 1 life.

When this creature enters, each opponent may put any number of artifact, creature, enchantment, and/or land cards from their hand onto the battlefield.

Trample, haste
If you would put one or more counters on a permanent or player, put twice that many of each of those kinds of counters on that permanent or player instead.
If an opponent would put one or more counters on a permanent or player, they put half that many of each of those kinds of counters on that permanent or player instead, rounded down.

: Destroy target blue creature.

Each land is a Swamp in addition to its other land types.

First strike, lifelink
Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)
At the beginning of your end step, if you gained life this turn, create a 1/1 white Cat creature token. Then if you have the city's blessing, for each token you control that entered this turn, create a token that's a copy of it.

Draw three cards.

Jeska enters with a loyalty counter on her for each time you've cast a commander from the command zone this game.
0: Choose target creature. Until your next turn, if that creature would deal combat damage to one of your opponents, it deals triple that damage to that player instead.
−X: Jeska deals X damage to each of up to three targets.
Jeska, Thrice Reborn can be your commander.
Partner

Commander creatures you own have "Whenever you cast a spell that shares a creature type with this creature, draw a card. This ability triggers only once each turn."

You may cast spells as though they had flash.

Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.

Flying
: Add one mana of any color.