Courser of Kruphix [The List] Return to Ravnica Prerelease Promos it becomes an Aura with

it becomes an Aura with "enchant creature put onto the battlefield with Necromancy

Put all other cards revealed this way on the bottom of your planar deck in any order

guaranteed to last

Set: Mirrodin Besieged Type: Artifact — Equipment Rarity: Common Cost: {1} Equipped creature gets +2/+2 and can't block

Courser of Kruphix [The List] Return to Ravnica Prerelease Promos it becomes an Aura withSet: The List Type: Enchantment Creature Centaur Rarity: Rare Cost: {1}{G}{G} Play with the top card of your library revealed. You may play lands from the top of your library. Whenever a land enters the battlefield under your control, you gain 1 life.