Stronghold Gambit [Nemesis] Hydra The book shrieks horribly until

The book shrieks horribly until its cover is opened

and Y is half the number of Forests you control

Set: Judge Gift Cards 2001 Type: Creature — Elemental Rarity: Rare Cost: {R}{R}{R} Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking

Set: Commander 2013 Type: Legendary Creature — Bird Wizard Rarity: Mythic Cost: {G}{W}{U} Flying

Stronghold Gambit [Nemesis] Hydra The book shrieks horribly untilSet: Nemesis Type: Sorcery Rarity: Rare Cost: {1}{R} Each player chooses a card in their hand. Then each player reveals their chosen card. The owner of each creature card revealed this way with the lowest mana value puts it onto the battlefield.