Garza's Assassin [Coldsnap] Aether Revolt Prerelease Promos you may discard a land

you may discard a land card instead

Set: Onslaught Type: Legendary Creature — Human Wizard Rarity: Rare Cost: {3}{U}{U} Face-down creatures get +1/+1

using their libraries as their decks

Set: Portal Three Kingdoms Type: Creature — Human Advisor Rarity: Uncommon Cost: {2}{U} When Council of Advisors enters the battlefield

The market is now closed

Garza's Assassin [Coldsnap] Aether Revolt Prerelease Promos you may discard a landSet: Coldsnap Type: Creature Human Assassin Rarity: Rare Cost: {B}{B}{B} Sacrifice Garza's Assassin: Destroy target nonblack creature. RecoverPay half your life, rounded up. (When another creature is put into your graveyard from the battlefield, you may pay half your life, rounded up. If you do, return this card from your graveyard to your hand. Otherwise, exile this card.)