Wall of Stone [Alpha Edition] Legendary Enchantment You may cast spells from

You may cast spells from the top of your library by removing a counter from a creature you control in addition to paying their other costs

Some myr monitor other myr

and it encompasses all others

They just want to surprise you before they do it

Why not charge

Wall of Stone [Alpha Edition] Legendary Enchantment You may cast spells fromSet: Alpha Edition Type: Creature Wall Rarity: Uncommon Cost: {1}{R}{R} Defender (This creature can't attack.) The Earth herself lends her strength to these walls of living stone, which possess the stability of ancient mountains. These mighty bulwarks thwart ground based troops, providing welcome relief for weary warriors who defend the land.