Nevinyrral's Disk [Fourth Edition (Foreign Black Border)] Phyrexian Construct {T}: Double the amount of

{T}: Double the amount of each type of unspent mana you have

Memnarch understands

Set: Collectors' Edition Type: Enchantment Rarity: Rare Cost: {R}{R} Players can't untap more than one creature during their untap steps

Set: Portal Three Kingdoms Type: Creature — Human Soldier Archer Rarity: Uncommon Cost: {R} Sacrifice Fire Bowman: It deals 1 damage to any target

Set: Alpha Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {W} Enchant creature

Nevinyrral's Disk [Fourth Edition (Foreign Black Border)] Phyrexian Construct {T}: Double the amount ofSet: Fourth Edition (Foreign Black Border) Type: Artifact Rarity: Rare Cost: {4} Nevinyrral's Disk enters the battlefield tapped. {1}, {T}: Destroy all artifacts, creatures, and enchantments.