As an additional cost to cast this spell, reveal a colorless creature card from your hand.

Exile each creature and planeswalker with mana value less than the revealed card's mana value.

Counter target spell or ability that targets a permanent you control.

This spell costs less to cast if it targets a spell or ability that targets a creature you control with power 7 or greater.

+2: Ugin deals 3 damage to any target.

−X: Exile each permanent with mana value X or less that's one or more colors.

−10: You gain 7 life, draw seven cards, then put up to seven permanent cards from your hand onto the battlefield.

Kicker (You may pay an additional as you cast this spell.)

Exile target nonland permanent. Create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add ." If Call Up Emrakul to Help was kicked, instead create a token that's a copy of Emrakul, the Promised End.

When you cast this spell, target opponent exiles the top four cards of their library, then you may put any number of land cards that player owns from exile onto the battlefield under your control.

+4: Target player exiles a card from their hand.

−3: Exile target permanent.

−14: Restart the game, leaving in exile all non-Aura permanent cards exiled with Karn. Then put those cards onto the battlefield under your control.

: Return target noncreature artifact card with mana value 1 or less from your graveyard to the battlefield.

Whenever a creature dies, you may untap this artifact.

When you cast this spell, you may put a card an opponent owns from exile into that player's graveyard. If you do, you gain 5 life.

Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)

When you cast this spell, target opponent reveals their hand. You choose from it a nonland card with mana value 3 or less and a card with mana value 4 or greater. That player discards those cards.

Prototype — 2/1 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

When this creature enters, if you cast it, exile target instant or sorcery card with mana value less than or equal to this creature's power from your graveyard. Copy that card. You may cast the copy without paying its mana cost.

Prototype — 3/2

At the beginning of your upkeep, return target creature card with power less than this creature's power from your graveyard to the battlefield. Its base power perpetually becomes equal to this creature's power.

When you cast this spell, exile up to one target permanent that's one or more colors.

Whenever you cast a colorless spell, exile up to one target permanent that's one or more colors.

+2: You gain 3 life and draw a card.

0: Add .

−11: Search your library for any number of colorless nonland cards, exile them, then shuffle. Until end of turn, you may cast those cards without paying their mana costs.

When this creature leaves the battlefield, draw a card, then you may put a permanent card with mana value less than or equal to the number of lands you control from your hand onto the battlefield tapped.

Warp (You may cast this card from your hand for its warp cost. Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.)

You may reveal this card from your opening hand. If you do, at the beginning of your first upkeep, look at the top four cards of your library. You may put one of those cards back on top of your library. Exile the rest.

When you cast this spell, exile target permanent that's one or more colors.

When you cast this spell, you may search your library for a colorless creature card with mana value 7 or greater, reveal it, then shuffle and put that card on top.

The first creature spell you cast each turn costs less to cast.

Colorless spells you cast cost less to cast.

+1: Exile the top card of your library face down and look at it. Create a 2/2 colorless Spirit creature token. When that token leaves the battlefield, put the exiled card into your hand.

−3: Destroy target permanent that's one or more colors.

Devoid (This card has no color.)

When you cast this spell, exile target artifact, enchantment, or land.

Reach

, Sacrifice a land: Return this card from your graveyard to your hand. ( represents colorless mana.)

Devoid (This card has no color.)

When you cast this spell, for each opponent, gain control of up to one target creature that player controls until end of turn. Untap those creatures. They gain trample, haste, and annihilator 1 until end of turn.

Trample, haste, annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent of their choice.)