As this creature enters, choose a player.
This creature has protection from the chosen player.

Whenever Ultimecia enters or attacks, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
At the beginning of your end step, you may pay and exile eight cards from your graveyard. If you do, transform Ultimecia.

Flying
Whenever you draw a card, Niv-Mizzet deals 1 damage to any target.
: Draw a card.

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This land enters tapped unless you control a Plains.
: Add .
, : Create a 1/1 white Human creature token.

Flying, vigilance
, Exile Senu: You gain 2 life and scry 2.
When a legendary creature you control attacks and isn't blocked, if this card is exiled, put it onto the battlefield attacking.

Reveal cards from the top of your library until you reveal a nonland card, then put all cards revealed this way into your hand.

Destroy target artifact or creature. It can't be regenerated.

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This land enters tapped unless you control two or more other lands.
: Add or .

This land enters tapped unless you control two or more other lands.
: Add or .

Draw three cards, then put two cards from your hand on top of your library in any order.

If a basic land you control is tapped for mana, it produces mana of a color of your choice instead of any other type.

: Untap target creature.

Enchant creature
Enchanted creature has base power and toughness 9/10 and has indestructible.

Lifelink
Whenever another creature dies, put a +1/+1 counter on Thanos.

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.

Flying
Whenever you draw your second card each turn, target opponent sacrifices a nontoken creature of their choice.

Destroy all creatures, then any number of target players each mill half their library, rounded down.

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