Norn's Choirmaster (Extended Art) [Phyrexia: All Will Be One Commander] The Brothers' War Commander Set: Betrayers of Kamigawa Type:

Set: Betrayers of Kamigawa Type: Instant — Arcane Rarity: Rare Cost: {X}{U}{U} You may exile a blue card with mana value X from your hand rather than pay this spell's mana cost

Set: Arabian Nights Type: Instant Rarity: Common Cost: {1}{W}{W} Attacking creatures get +2/+0 until end of turn

and other Transformers® creatures you control get +2/+0

you have an additional arsenal zone

if you've played an attack action card and a 'non-attack' action card this turn

Norn's Choirmaster (Extended Art) [Phyrexia: All Will Be One Commander] The Brothers' War Commander Set: Betrayers of Kamigawa Type:Set: Phyrexia: All Will Be One Commander Type: Creature Phyrexian Angel Rarity: Rare Cost: {3}{W}{W} Flying, first strike Whenever a commander you control enters the battlefield or attacks, proliferate.