Temple of Mystery

Temple of Mystery enters the battlefield tapped.
When Temple of Mystery enters the battlefield, scry 1.
: Add or .

Depopulate

Each player who controls a multicolored creature draws a card. Then destroy all creatures.

Leonin Sanctifier

Lifelink
When Leonin Sanctifier enters the battlefield, choose a creature card in your hand. It perpetually gains lifelink.

Strict Proctor

Flying
Whenever a permanent entering the battlefield causes a triggered ability to trigger, counter that ability unless its controller pays .

Venerable Warsinger

Vigilance, trample
Whenever Venerable Warsinger deals combat damage to a player, you may return target creature card with mana value X or less from your graveyard to the battlefield, where X is the amount of damage Venerable Warsinger dealt to that player.

Littjara Mirrorlake

Littjara Mirrorlake enters the battlefield tapped.
: Add .
, , Sacrifice Littjara Mirrorlake: Create a token that’s a copy of target creature you control, except it enters the battlefield with an additional +1/+1 counter on it. Activate this ability only any time you could cast a sorcery.

Base Camp

Base Camp enters the battlefield tapped.
: Add .
: Add one mana of any color. Spend this mana only to cast a Cleric, Rogue, Warrior, or Wizard spell or to activate an ability of a Cleric, Rogue, Warrior, or Wizard.