Timetwister

Each player shuffles their hand and graveyard into their library, then draws seven cards. (Then put Timetwister into its owner’s graveyard.)

Doubling Cube

, : Double the amount of each type of unspent mana you have.

Beacon of Creation

Create a 1/1 green Insect creature token for each Forest you control. Shuffle Beacon of Creation into its owner’s library.

Eater of Days

Flying, trample
When Eater of Days enters the battlefield, you skip your next two turns.

Genesis Chamber

Whenever a nontoken creature enters the battlefield, if Genesis Chamber is untapped, that creature’s controller creates a 1/1 colorless Myr artifact creature token.

Myr Matrix

Indestructible (Effects that say “destroy” don’t destroy this artifact.)
Myr creatures get +1/+1.
: Create a 1/1 colorless Myr artifact creature token.

Vengeful Dreams

As an additional cost to cast this spell, discard X cards.
Exile X target attacking creatures.

Vengeful Dreams

As an additional cost to cast this spell, discard X cards.
Exile X target attacking creatures.

Guiltfeeder

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
Whenever Guiltfeeder attacks and isn’t blocked, defending player loses 1 life for each card in their graveyard.

Planar Portal

, : Search your library for a card and put that card into your hand. Then shuffle your library.

Defense Grid

Each spell costs more to cast except during its controller’s turn.

Phyrexian Colossus

Phyrexian Colossus doesn’t untap during your untap step.
Pay 8 life: Untap Phyrexian Colossus.
Phyrexian Colossus can’t be blocked except by three or more creatures.

Wirewood Guardian

Forestcycling (, Discard this card: Search your library for a Forest card, reveal it, put it into your hand, then shuffle your library.)

Forgotten Ancient

Whenever a player casts a spell, you may put a +1/+1 counter on Forgotten Ancient.
At the beginning of your upkeep, you may move any number of +1/+1 counters from Forgotten Ancient onto other creatures.

Grip of Chaos

Whenever a spell or ability is put onto the stack, if it has a single target, reselect its target at random. (Select from among all legal targets.)

Corpse Harvester

, , Sacrifice a creature: Search your library for a Zombie card and a Swamp card, reveal them, and put them into your hand. Then shuffle your library.