Nemesis Mask [Darksteel] URL/Convention Promos the Su-Chi were inherently unstable

the Su-Chi were inherently unstable but provided useful knowledge for Tocasia's students

Set: Tempest Type: Artifact Rarity: Rare Cost: {2} Green spells you cast cost {1} less to cast

Set: Friday Night Magic 2014 Type: Creature — Elf Druid Rarity: Rare Cost: {G} {T}: Add {G}

Set: Legends Type: Instant Rarity: Common Cost: {G} Counter target instant or Aura spell that targets a permanent you control

Nemesis Mask [Darksteel] URL/Convention Promos the Su-Chi were inherently unstableSet: Darksteel Type: Artifact Equipment Rarity: Uncommon Cost: {3} All creatures able to block equipped creature do so. Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)