Nightmare Unmaking [Commander 2019] Dragon Noble You can only use each

You can only use each of the following effects of "Speaker for the Ice Barriers" once per turn

Set: Friday Night Magic 2010 Type: Land — Locus Rarity: Rare Cloudpost enters the battlefield tapped

Ob Nixilis Type: Sorcery Rarity: Common Cost: {B} Each player sacrifices a creature

This strategy employs an unusual style of play that's highly rewarding but requires you to conform to a specific gameplay condition

you can negate any Spell/Trap effect activated by your opponent

Nightmare Unmaking [Commander 2019] Dragon Noble You can only use eachSet: Commander 2019 Type: Sorcery Rarity: Rare Cost: {3}{B}{B} Choose one Exile each creature with power greater than the number of cards in your hand. Exile each creature with power less than the number of cards in your hand.