Octopus Umbra

Enchant creature
Enchanted creature has base power and toughness 8/8 and has “Whenever this creature attacks, you may tap target creature with power 8 or less.”
Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

Grapple with the Past

Mill three cards, then you may return a creature or land card from your graveyard to your hand.

True-Name Nemesis

As True-Name Nemesis enters the battlefield, choose a player.
True-Name Nemesis has protection from the chosen player. (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything controlled by that player.)

Fog Bank

Defender, flying
Prevent all combat damage that would be dealt to and dealt by Fog Bank.

Memory Erosion

Whenever an opponent casts a spell, that player mills two cards.

Cloudshift

Exile target creature you control, then return that card to the battlefield under your control.

Enter the Unknown

Target creature you control explores. (Reveal the top card of your library. Put that card into your hand if it’s a land. Otherwise, put a +1/+1 counter on the creature, then put the card back or put it into your graveyard.)
You may play an additional land this turn.

Path of Discovery

Whenever a creature enters the battlefield under your control, it explores. (Reveal the top card of your library. Put that card into your hand if it’s a land. Otherwise, put a +1/+1 counter on the creature, then put the card back or put it into your graveyard.)

Path of Discovery

Whenever a creature enters the battlefield under your control, it explores. (Reveal the top card of your library. Put that card into your hand if it’s a land. Otherwise, put a +1/+1 counter on the creature, then put the card back or put it into your graveyard.)

Path of Discovery

Whenever a creature enters the battlefield under your control, it explores. (Reveal the top card of your library. Put that card into your hand if it’s a land. Otherwise, put a +1/+1 counter on the creature, then put the card back or put it into your graveyard.)

Serra Ascendant

Lifelink (Damage dealt by this creature also causes you to gain that much life.)
As long as you have 30 or more life, Serra Ascendant gets +5/+5 and has flying.

Mana Leak

Counter target spell unless its controller pays .

Fog Bank

Defender, flying
Prevent all combat damage that would be dealt to and dealt by Fog Bank.

Reality Shift

Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it’s a creature card, it can be turned face up any time for its mana cost.)

Vivid Grove

Vivid Grove enters the battlefield tapped with two charge counters on it.
: Add .
, Remove a charge counter from Vivid Grove: Add one mana of any color.

Bojuka Bog

Bojuka Bog enters the battlefield tapped.
When Bojuka Bog enters the battlefield, exile all cards from target player’s graveyard.
: Add .

New Blood

As an additional cost to cast this spell, tap an untapped Vampire you control.
Gain control of target creature. Change the text of that creature by replacing all instances of one creature type with Vampire.

Oketra’s Last Mercy

Your life total becomes equal to your starting life total. Lands you control don’t untap during your next untap step.

Oketra’s Last Mercy

Your life total becomes equal to your starting life total. Lands you control don’t untap during your next untap step.