Sacrifice a creature: Target player discards two cards. Activate only as a sorcery.

When this creature enters, put a +1/+1 counter on target creature you don't control.
, : Destroy target creature with a counter on it.

Flying
When this creature enters, creatures your opponents control get -2/-2 until end of turn.
Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Sliver creatures you control have "When this creature enters, you may exile target creature an opponent controls until this creature leaves the battlefield."

Flying
When this creature enters, untap up to five lands.

: Add .
, : Target Goblin creature gets +2/+0 until end of turn.

When Brinelin enters and whenever you cast a spell with mana value 6 or greater, you may return target nonland permanent to its owner's hand.
Partner (You can have two commanders if both have partner.)

Reach (This creature can block creatures with flying.)
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Whenever another creature dies, each opponent loses 1 life.

Wild Magic Surge — Whenever this creature attacks, roll a d20.
1—9 | Exile the top card of your library. You may play it this turn.
10—19 | Exile the top two cards of your library. You may play them this turn.
20 | Exile the top three cards of your library. You may play them this turn.

Creatures you control have first strike.
Creatures your opponents control lose first strike and can't have or gain first strike.

Morph—Reveal a blue card in your hand. (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When this creature is turned face up, look at target opponent's hand.

This spell costs more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

Create a token that's a copy of target creature you control, except the token has flying and it isn't legendary.

Choose one or both —
• Counter target creature spell.
• Return target creature card from your graveyard to your hand.

When this creature dies, each player may search their library for a card and put that card into their hand. Then each player who searched their library this way shuffles.

( can be paid with either or 2 life.)
Put target card from a graveyard on top of its owner's library.

Partner with Lore Weaver (When this creature enters, target player may put Lore Weaver into their hand from their library, then shuffle.)
: Untap two target lands.

Goblin Negotiation deals X damage to target creature. Create a number of 1/1 red Goblin creature tokens equal to the amount of excess damage dealt to that creature this way.

Tap an untapped creature you control: This enchantment deals 1 damage to target player or planeswalker.

Enchant basic land you control
When this Aura enters, exile target creature or planeswalker an opponent controls until this Aura leaves the battlefield.

Enchant player
Creatures enchanted player controls attack each combat if able.

Equipped creature gets +1/-1.
Whenever equipped creature dies, draw two cards.
Equip

Target creature gets +2/+2 until end of turn. If you cast this spell during your main phase, that creature gets +4/+4 until end of turn instead.

This land enters tapped.
: Add or .

This artifact enters tapped.
As this artifact enters, choose a color.
: Add one mana of the chosen color.

Flying
When this creature enters, shuffle the cards from your hand into your library, then draw that many cards.
When this creature dies, shuffle the cards from your hand into your library, then draw that many cards.

Enchant land
Enchanted land has ": Create a 1/1 green Squirrel creature token."

Changeling (This card is every creature type.)
Haste
Champion a creature (When this enters, sacrifice it unless you exile another creature you control. When this leaves the battlefield, that card returns to the battlefield.)

Whenever you discard a card, you may exile that card from your graveyard. If you do, you may play that card this turn.

, Tap X untapped artifacts you control: Look at the top X cards of your library. Put one of those cards into your hand and the rest into your graveyard.
Partner (You can have two commanders if both have partner.)

Revolt — At the beginning of your end step, if a permanent left the battlefield under your control this turn, create a 1/1 colorless Servo artifact creature token.
, Sacrifice a creature: Scry 1.

As long as you control a Mountain, this creature has menace. (It can't be blocked except by two or more creatures.)

Target player gains 7 life and draws two cards.

Create a 4/4 green Beast creature token.
Storm (When you cast this spell, copy it for each spell cast before it this turn.)

, : This creature deals 5 damage to target attacking or blocking creature with flying.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Flying
: Add or .