From Under the Floorboards [Shadows over Innistrad Prerelease Promos] Centaur Cleric you may begin the game

you may begin the game with it on the battlefield

Set: Kaladesh Prerelease Promos Type: Land Rarity: Rare Botanical Sanctum enters the battlefield tapped unless you control two or fewer other lands

Enchanted creature gets +X/+Y

except it doesn't copy that creature's color and it has "At the beginning of your upkeep

From Under the Floorboards [Shadows over Innistrad Prerelease Promos] Centaur Cleric you may begin the gameSet: Shadows over Innistrad Prerelease Promos Type: Sorcery Rarity: Rare Cost: {3}{B}{B} Madness {X}{B}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) Create three tapped 2 2 black Zombie creature tokens and you gain 3 life. If this spell's madness cost was paid, instead create X of those tokens and you gain X life.