Dark Confidant [Modern Masters 2015] Journey into Nyx Hero's Path puts it on the bottom

puts it on the bottom of their library

Whenever Cavern-Hoard Dragon deals combat damage to a player

Each creature you tap while casting this spell pays for 1 or one mana of that creature's color

Set: Duskmourn: House of Horror Prerelease Promos Type: Enchantment — Room Rarity: Mythic Cost: {2}{U} Mirror Room

1x Rhystic Study as “Unstable Harmonics”

Dark Confidant [Modern Masters 2015] Journey into Nyx Hero's Path puts it on the bottomSet: Modern Masters 2015 Type: Creature Human Wizard Rarity: Mythic Cost: {1}{B} At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its converted mana cost. Greatness, at any cost.