Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)
When this creature enters, look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Whenever you gain life, you may put that many +1/+1 counters on each creature you control. Do this only once each turn.

Target player gains 4 life.
Landfall — If you had a land enter the battlefield under your control this turn, that player gains 8 life instead.

Vigilance, reach
You have no maximum hand size.
Embiggen Fist — Whenever you cast a spell that targets a creature you control, draw a card. Until end of turn, Ms. Marvel gains "Ms. Marvel's base power is equal to the number of cards in your hand."

Savage Twister deals X damage to each creature.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
Whenever a creature you control attacks alone, you may search your library for an Aura card that could enchant that creature, put it onto the battlefield attached to that creature, then shuffle.

(: Add .)

Flying, trample
Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.)
At the beginning of your end step, you draw X cards and lose X life, where X is your speed.

Whenever you cast a noncreature spell, if at least four mana was spent to cast it, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Whenever you cast a noncreature spell, if at least eight mana was spent to cast it, put eight +1/+1 counters on Ultros.

When this enchantment enters, exile all graveyards.
If a card or token would be put into a graveyard from anywhere, exile it instead.

As this artifact enters, look at an opponent's hand, then choose any card name.
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.

: Add one mana of any color in your commander's color identity.

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

: Add .
: Add one mana of any color. Spend this mana only to cast a Dragon spell or an Omen spell.
, , Sacrifice this land: Search your library for a Dragon card, reveal it, put it into your hand, then shuffle.

Zombies you control have flying.
, , Sacrifice another nontoken creature: Create an X/X blue Zombie creature token, where X is the sacrificed creature's toughness.

Equipped creature gets +2/+2 and has indestructible.
Equip commander
Equip

Whenever an opponent casts a spell with mana value 3 or less, this creature deals 1 damage to that player.

Flying
Whenever another nontoken Dragon you control enters, create a 5/5 red Dragon creature token with flying.
: Dragons you control get +1/+0 until end of turn.

During your turn, spells your opponents cast cost more to cast and abilities your opponents activate cost more to activate unless they're mana abilities.
Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)

Flash
Flying
This creature enters with a -1/-1 counter on it.
, Remove a counter from this creature: Counter target noncreature spell. Its controller draws a card.