Mudslide [Ice Age] Giant The book shrieks horribly until

The book shrieks horribly until its cover is opened

Set: Commander 2016 Type: Legendary Creature — Merfolk Wizard Rarity: Rare Cost: {G}{U} {4}: Scry 1

Set: Legends Type: Creature — Wall Rarity: Rare Cost: {3}{R}{R} Defender (This creature can't attack

In the reflection

Set: Battle for Zendikar Prerelease Promos Type: Legendary Planeswalker — Gideon Rarity: Mythic Cost: {2}{W}{W} +1: Until end of turn

Mudslide [Ice Age] Giant The book shrieks horribly untilSet: Ice Age Type: Enchantment Rarity: Rare Cost: {2}{R} Creatures without flying don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player may choose any number of tapped creatures without flying they control and pay {2} for each creature chosen this way. If the player does, untap those creatures.