This spell can't be countered.
At the beginning of each upkeep, create a 3/3 blue Serpent creature token named Koma's Coil.
Sacrifice another Serpent: Choose one —
• Tap target permanent. Its activated abilities can't be activated this turn.
• Koma gains indestructible until end of turn.

, , Sacrifice this creature: Destroy all enchantments.

Target player takes an extra turn after this one. Shuffle Beacon of Tomorrows into its owner's library.

Target player draws cards equal to half the number of cards in their library and loses half their life. Round up each time.

This creature gets +1/+1 for each poison counter your opponents have.

When this creature enters, create a 2/2 green Ooze creature token.
At the beginning of your end step, put a +1/+1 counter on each Ooze you control.
: Create a 2/2 green Ooze creature token.

Assist (Another player can pay up to of this spell's cost.)
Each player shuffles their hand and graveyard into their library, then draws seven cards. Exile Game Plan.

Whenever you attack, each opponent loses X life and you gain X life, where X is the number of attacking creatures. If Mishra, Claimed by Gix and a creature named Phyrexian Dragon Engine are attacking, and you both own and control them, exile them, then meld them into Mishra, Lost to Phyrexia. It enters tapped and attacking.

First strike
: Destroy target artifact if its mana value is equal to the amount of unspent mana you have.

: Target player gains control of target artifact, creature, or land you control.

Imprint — When this artifact enters, you may exile a nonland card from your hand.
Spells you cast that share a card type with the exiled card cost less to cast.

Sacrifice this creature: Prevent all combat damage that would be dealt this turn.

Changeling (This card is every creature type.)

Choose one —
• Destroy all creatures.
• Destroy all artifacts and enchantments.

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

Whenever an Equipment you control enters, you may draw a card.
Metalcraft — Equipment you control have equip as long as you control three or more artifacts.

Defender
: Exchange target opponent's life total with this creature's toughness.

, , Sacrifice this artifact: Search your library for a land card, reveal it, put it into your hand, then shuffle.

Magecraft — Whenever you cast or copy an instant or sorcery spell, each opponent loses 2 life and you gain 2 life.
+1: You lose 1 life. Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.
−3: Each opponent sacrifices a creature with the greatest power among creatures that player controls.
−8: Each opponent may discard a card. If they don't, they lose 3 life. Repeat this process six more times.

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