Flying, protection from white
When this creature enters, return target blue or red creature card from your graveyard to your hand.

Return target nonland permanent you don't control to its owner's hand.
Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

When this artifact enters, scry 2.
Whenever another artifact you control with mana value 3 or greater enters, create a 0/0 colorless Construct artifact creature token with "This token gets +1/+1 for each artifact you control."

: Add .
, : Add , , or .

No more than one creature can attack each combat.
No more than one creature can block each combat.

Choose a nonland card name. Target player reveals their hand and discards all cards with that name.
Flashback—Sacrifice a creature. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Deathtouch, haste
When Queen Marchesa enters, you become the monarch.
At the beginning of your upkeep, if an opponent is the monarch, create a 1/1 black Assassin creature token with deathtouch and haste.

When you cast this spell, target opponent exiles the top half of their library, rounded up.
Ward—Sacrifice two permanents.
Ulamog enters with a number of +1/+1 counters on it equal to the greatest mana value among cards in exile.
Ulamog has annihilator X, where X is the number of +1/+1 counters on it.

Whenever an artifact you control enters, this creature deals 1 damage to each opponent.

All creatures have haste.

: Add .
: Add . Spend this mana only to cast colorless Eldrazi spells or activate abilities of colorless Eldrazi.

You may play two additional lands on each of your turns.

If you control two or more other lands, this land enters tapped.
: Add .
: Until end of turn, this land becomes a 3/2 red Goblin creature with "Whenever this creature attacks, create a 1/1 red Goblin creature token that's tapped and attacking." It's still a land.

All Slivers have ": Target Sliver creature gets +X/+0 until end of turn, where X is the number of Slivers on the battlefield."

At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.

Protection from Humans
Pay 1 life, Sacrifice another creature: Put a -1/-1 counter on up to one target creature and draw a card.
, Discard a card: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

: Add .
, Sacrifice this land: Return target land card from your graveyard to your hand.

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)
If one or more tokens would be created under your control, those tokens plus that many 1/1 green Squirrel creature tokens are created instead.
, Sacrifice X Squirrels: Target creature gets +X/-X until end of turn.

Flying
Whenever one or more creatures deal combat damage to you, each opponent sacrifices a creature of their choice that dealt combat damage to you this turn. The Ring tempts you.
Discard a card: Witch-king of Angmar gains indestructible until end of turn. Tap him.

This creature enters with X +1/+1 counters on it.
For each 1 damage that would be dealt to this creature, if it has a +1/+1 counter on it, remove a +1/+1 counter from it and prevent that 1 damage.
: Prevent the next 1 damage that would be dealt to this creature this turn.
: Put a +1/+1 counter on this creature. Activate only during your upkeep.